The new Mercedes-Benz SLK 250 CDI marks the continuation of the company’s unique diesel engine heritage, as well as countering the common misconception that diesel engines and sports cars are incompatible. The four-cylinder diesel engine in the SLK Roadster delivers 150 kW (204 hp) from a displacement of just 2.2 litres to give the two-seater its characteristic sporty temperament. The sprint from 0 to 100 km/h (0-62 mph) takes only 6.7 seconds. Apart from all this, the Mercedes SLK 250 CDI is the most economical and therefore the most environmentally compatible roadster in its segment. It is happy with 4.9 litres of diesel fuel per 100 kilometers (63 miles) (NEDC combined consumption).With the diesel engine in the SLK Mercedes-Benz has taken the next step in a successful strategy that began in 1936 with the 260 D model – the world’s very first diesel car. The world’s oldest motor manufacturer has continued to develop these robust and economical engines ever since and, as far back as the mid-1970s, was able to demonstrate their hitherto undiscovered qualities as high-performance units in record-breaking drives with the legendary C111-II D and the C111-III. The new Mercedes-Benz SLK 250 CDI is the logical successor to these illustrious forbears.
A certain sluggishness has been accepted as an intrinsic characteristic of the diesel engine ever since Mercedes-Benz installed one in the world’s first diesel passenger car in 1936. So wrong. Some 40 years later, engineers working for the Swabian manufacturer began to look more closely at the performance potential of the thrifty compression-ignition engine – and soon discovered what they were looking for. They fitted a turbocharger to the standard 80 hp five-cylinder engine found in the 240 D 3.0 and 300 D models to elicit an impressive 190 hp from the 3-litre diesel.
With this powerful diesel engine under the bonnet of a spectacularly styled gull-wing model, painted in bright orange, Mercedes-Benz was soon geared up for some record-breaking drives. The C 111-II D powered its way to some sensational records at the Nardo circuit in southern Italy in 1976. For a whole hour, for example, it circled the high-speed track at anaverage speed of 253.770 km/h. It went on to collect further records in all categories – over distances of 10 to 10,000 kilometres and over periods of 6 to 24 hours.
No one had previously thought a diesel vehicle capable of such performance.
In April 1978, the even more aerodynamically designed C 111-III consigned these records to the scrapheap of history, with what was by that stage a 230 hp diesel engine with exhaust gas turbocharging and charge air cooling. It set a new record over one hour with an average speed of around 320 km/h, while the average over the other record distances also never fell below 314 km/h. No other diesel vehicle had ever even come close to such speeds. With these impressive records under its belt the C 111-III was able, once and for all, to prove the reliability and efficiency of the turbodiesel engine.
While these record-breaking drives were going on, development of the production version of the turbodiesel continued apace. These efforts led in 1978 to the market launch of the 300 SD, the world’s first diesel car with exhaust gas turbocharger.
In 1997 Mercedes-Benz ushered in a new era in diesel technology with the C 220 CDI. This was the first production passenger car to feature a diesel engine with common-rail direct injection. This new technology gave the car a significantly higher output and extra torque, while also setting new standards in the disciplines of fuel consumption and pollutant emissions.
That Mercedes-Benz should now for the first time be offering the sporty SLK Roadster with a diesel engine is the logical next stage in these developments. Its four-cylinder diesel engine, with a displacement of 2143 cc, delivers 150 kW (204 hp) with available torque of 500 Newton metres – as much as a petrol-engined model with more than twice this displacement would normally offer. The new SLK 250 CDIfeatures the most powerful diesel powerplant in this class, with a thrust that propels the Roadster to a very sporty level of performance.
Equipped with the standard 7G-TRONIC PLUS automatic transmission (a six-speed manual transmission will follow in the second quarter of next year), the diesel SLK can cover the sprint from zero to 100km/h in 6.7 seconds and achieve a top speed of 243 km/h. Moreover, the flexibility of the SLK 250 CDI is nothing short of phenomenal. Thanks to its enormous diesel torque it accelerates from 80 to 120 km/h in just 4.3 seconds – easily the best figure in this class, making for safe and effortless overtaking.
Apart from all this, the SLK 250 CDI is the most economical and therefore the most environmentally compatible roadster in its segment. It is happy with 4.9 litres of diesel fuel per 100 kilometres (NEDC combined consumption), which corresponds to CO2 emissions of 128 g/km. In other words, the diesel SLK combines thoroughbred sports car performance with the fuel economy of a sub-compact. This guarantees effortlessly superior driving pleasure with great fuel efficiency.
The diesel engine achieves its exemplary output, torque, fuel consumption and emissions figures, as well as its highly impressive smoothness for a diesel unit, thanks to a series of innovative technologies. These include fourth-generation common-rail injection with precise injection timing, as well as two-stage turbocharging. Like all SLK models, the SLK 250 CDI is fitted as standard with an ECO start/stop system.
The frugal fuel consumption makes the SLK 250 CDI a car with superior long-distance qualities. Using the European motorways, it is quite possible to drive non-stop from the North Sea all the way to a beach on the Mediterranean. Very comfortable sports seats, a comfortable suspension setup and the largest luggage capacity in this segment also do their bit to create the right conditions.
As it shares the same genes with the other members of the successful SLK family, the SLK 250 CDI combines lightfooted sportiness with stylish comfort, a striking sports car design and absolute suitability for day-to-day use, while also delivering top performance with exemplary ecology. This means that the diesel version, too, provides open-top driving enjoyment at an extraordinarily high level.
Likewise, the SLK 250 CDI too is available with a choice of three versions of the famous vario-roof – one of them the panoramic vario-roof with MAGIC SKY CONTROL. This glass roof can be changed from light to dark at the touch of a button. There are also three suspension variants: a conventional steel suspension, a sports suspension with a stiffer spring and damper setup and a suspension with an electronically controlled, fully automatic damping system.
Externally the new SLK 250 CDI is no different in appearance from the petrol models. It even retains the twin exhaust system, and therefore has the same stunning looks for which all the SLK models are known.
The SLK 250 CDI demonstrates just how much Mercedes-Benz has achieved with the diesel engine. A comparison of the world’s very first diesel saloon, the Mercedes-Benz 260 D of 1936, with the new diesel Roadster, reveals some astounding developments. The 260 D needed 0.3 litres of fuel per kilowatt per 100 kilometres, whereas the SLK 250 CDI requires a mere 0.03 litres – a bare tenth of the amount. We see the same picture in terms of the power-to-swept-volume ratio: the forefather of all diesel cars, the 260 D, generated 17.7 hp from one litre of displacement, while its family’s latest offspring, the SLK 250 CDI, produces 95.1 hp – more than five times the figure. The SLK 250 CDI thus shows that the diesel engine still holds remarkable potential for the future.
Perfect proportions and purist lines for an exciting presence: the design of the SLS AMG Roadster stirs the emotions. Whether with the soft top open or closed, the Roadster exudes passionate sportiness and sheer exclusivity. The new super-sports car reinterprets the breathtaking lines of the iconic Mercedes-Benz 300 SL Roadster from the 1950s, and continues the legend of exciting sports cars bearing the Mercedes star.
Memories of the legendary Mercedes-Benz 300 SL are also rekindled by the hallmark wide radiator grille with the large Mercedes star and the wing-shaped cross-fin. The three-dimensional, sculptured front-end with its low-set, arrow-shaped front apron set well into the sides lends the SLS its powerful stance on the road. Six large cooling air intakes and the vertically arranged headlamps set well to the outside with their alluring inner ambience provide a dominant aura, and are also stylistically reminiscent of the 300 SL Roadster. The central bi-xenon low-beam headlamp with its metallic wing section is framed by two LED indicator strips at the top and by the LED daytime running lamps at the bottom.
Sheer dynamism is not only suggested by the almost two-metre long bonnet, the low greenhouse set well to the rear and the short rear end with the extending rear aerofoil, but also by the long wheelbase, wide track and large wheels. The short overhangs characterise the athletic proportions as strongly as the overall engineering concept for this super-sports car, with its low-mounted front-mid engine and dual clutch transmission in a transaxle configuration.
Design influences from aircraft construction
Allusions to aircraft construction come courtesy of the prominent Mercedes star, whose tubular section is reminiscent of the air intake on a jet engine when viewed from the side, as well as the long bonnet: as the eye is drawn forward, so the observer becomes more aware of the curved bonnet contour. The design of the four fins with their Silver Shadow finish adorning the two air outlet grilles on the end of the bonnet creates the same visual impression. These aircraft-style lines also visually accelerate the air that flows past – and make the SLS AMG appear extremely dynamic even while stationary.
The fins on the bonnet are also to be found on the vehicle flanks, and here too the afficionado will rediscover a typical design feature of the 300 SL Roadster. The “6.3” lettering integrated between the fins is a clear reference to the large, naturally aspirated V8 engine. A stylish character line emerges from the side air outlet, combining visual appeal with power in combination with the dramatic effect of the flank surface. Extraordinarily appealing and unmistakable, the only 1261-millimetre high passenger compartment with its high beltlines, flat side windows and steep windscreen is in the nature of an observation post. When closed, the low fabric soft top accentuates the purist overall impression and embodies classic roadster design. When opened, the soft top is deposited behind the seats in a Z-configuration to preserve the harmonious lines. The three soft top colours of black, red and beige are available to suit the choice of nine exterior and six interior colours.
Side view dominated by muscle and shoulder
Viewing the SLS from the side, the eye is drawn to the prominent vehicle shoulder, which stretches from the front to the rear like a taut muscle. Dynamism is also enhanced by exterior mirrors mounted on the beltline. Distinctive 19-inch (front) and 20-inch (rear) light-alloy wheels fill the flared wheel arches, which stand out prominently from the flank. Three different wheel variants all provide a good view of the large, high-performance composite brakes. Seen from above, a prominent, uninterrupted line runs from the muscle to the rear. This styling feature is also picked up on the bonnet, where the eye follows a distinctive contour. On the right, a sporty filler cap of solid metal provides another visual highlight.
Rear view that emphasises width
Dynamism and power are also suggested by the rear view of the SLS AMG Roadster. The gently sloping boot lid creates an impression of width, as do the pronounced shoulder, the closed soft top with its wide glass rear window and the flat rear light clusters. Featuring LED technology and two slim chrome inserts, the horizontally divided light clusters provide interesting perspectives. Wing-shaped LED lighting elements make for a distinctive and striking night design. Unlike in the SLS AMG Coupé, the third brake light is integrated into the boot lid.
Similarly inspired by motor racing are the black diffuser insert, the low, centrally located Formula 1-style LED foglight/reversing light and the two chromed tailpipes of the sports exhaust system. The strikingly tapered rear apron provides an unimpeded view of the wide rear wheels, lending the SLS its self-assured stance on the road. The spoiler integrated in the boot lid is automatically deployed from a speed of 120 km/h to ensure optimum stability at high speeds. As the aerials for radio, navigation and telephone reception are invisibly integrated into the boot lid, they do not disrupt the car’s silhouette.
Interior reminiscent of an aircraft cockpit and motor racing functionality
Authentic materials and outstanding precision with respect to material quality and standard of finish: the interior of the SLS AMG Roadster already thrills at first sight. As in the gullwing model, the Roadster cockpit creates associations with an aircraft cockpit. The characteristic styling feature is the dashboard, whose powerful and dramatic wing shape makes for an impression of width. Strikingly integrated into the dashboard are the galvanised air vents with their adjustable, cruciform nozzles and Silver Shadow finish – their shape reminiscent of a jet’s engines. The instrument cluster with its LED upshift indicator and two white backlit dial instruments adds another decidedly sporty touch with its metallic Silver Shadow finish. The silver dials have red-lit needles and a 360‑ km/h scale. As a central feature of the cockpit, the COMAND APS multimedia system is integrated between the two centre air vents.
The elongated centre console in matt metal similarly picks up on the design theme of an aircraft cockpit. It is home to the AMG DRIVE UNIT, which is inclined towards the SLS driver and allows him to choose his personal vehicle setup. The E-SELECT shift lever, whose styling recalls the thrust control of a jet, controls the AMG SPEEDSHIFT DCT 7-speed sports transmission. The solid metal selector lever is lined with high-grade leather bearing an embossed AMG emblem. The attractively integrated control unit for the electric soft top is located in the rear section of the centre console.
Numerous controls are precision-made from solid metal, with a high-sheen Silver Shadow surface. On request the centre console and other interior features such as the door sill panels, interior door trim and seat backrest trim are available in carbon-fibre. Alternatively AMG trim in high-gloss black is available for the centre console.
Authentic cockpit atmosphere in the interior
The concave shape of the interior door panels and the high beltline make for an authentic cockpit atmosphere. Together with the wide centre tunnel extending well to the rear, they reinforce the impression of safety and security. Topstitching and contrasting seams, as well as fine designo leather on the sports seats, create a luxurious impression and accentuate the hand-finished look. All surfaces such as the interior door panels and armrests are softly padded for a very pleasant feel.
Dynamic steering wheel design and six different leather colours
An authentic racing car touch is provided by the AMG Performance steering wheel with a diameter of 365 millimetres. The rim has a flattened lower section and an oval cross-section, plus perforated leather in the ergonomically formed grip area, for outstanding vehicle control. The shift paddles and lower insert are of metal. The unmistakable attention to detail for which Mercedes designers are known is very evident in the tasteful colour combinations in the interior. Six different single-tone designo leather colours are available to meet individual preferences: black, espresso brown, sand, classic red, light brown and porcelain. The sports seats with integrated head restraints and sporty transverse fluting are upholstered in designo leather, with a metal AMG badge in the backrests. Two-tone designo Exclusive leather seats are also available in espresso brown/black, classic red/black, sand/black and porcelain/black. If light brown is chosen as an interior colour, the sports seats are upholstered in natural leather with particularly high-quality woven leather on the centre seat panels.
The A-pillars are lined in anthracite Alcantara, heightening the functional, purist motor sports atmosphere. These surfaces are complemented with the sporty carpeting and floor mats bearing the AMG logo.
A super-sports car and cruiser in one: whether with the soft top open or closed, the SLS AMG Roadster offers its occupants an unrivalled driving experience. This is in large part due to the functional interior and extensive, exclusive standard appointments.
The driver of the SLS AMG Roadster has a low seating position typical of a sports car just 368 millimetres above the road surface. In combination with the generous effective headroom of max. 982 millimetres and the effective legroom of 1058 (driver) and 1078 (passenger) millimetres, this results in a very relaxed seating position. Good all-round visibility is made possible by the relatively upright angle of the windscreen. Decisive factors for the impression of spaciousness include the generous shoulder-room of 1483 millimetres and an elbow width of no less than 1606 millimetres.
The sports seats with integrated head restraints feature so-called two-zone seat cushions. Prominent side bolsters with a harder foam filling provide optimal lateral support, while the inner areas of the seat cushion and backrest are softer for a high level of comfort on long journeys. A black designo leather interior is standard equipment. The seat backrests are made from magnesium, a high-tech material that combines light weight with high strength. This leads to significant advantages where weight distribution and a low centre of gravity are concerned.
The fore-and-aft position, height, backrest angle, seat cushion angle and steering column are adjusted mechanically. If the optional Memory package is specified, these adjustments including the seat cushion angle are electric; three individual seat settings can also be stored in this way. The Memory package also includes four-way lumbar supports and adjustable seat side bolsters for more lateral support when cornering at speed. Pivoting air vents are integrated into the head restraints if the optional AIRSCARF® system is specified. The airflow can be adjusted to different body sizes using movable louvres, and the heating level can be set in three stages by pressing a button. The head and neck areas of the occupants are then bathed in a warm airflow – extending the roadster season. AIRSCARF® is operated using two keys in the centre console.
Glass draught-stop as standard
Irritating turbulences are prevented by the standard glass draught-stop: this is slotted onto the bulkhead between the seats and fixed in place with two levers. When not in use, the draught-stop is securely stowed in a textile bag in the boot. In combination with the optional single or two-tone designo Exclusive leather or designo Exclusive natural/textured leather in light brown, the SLS AMG Roadster features leather-lined roll-over bars with integrated grilles which improve occupant comfort even further.
AMG Performance steering wheel with high-quality, solid metal insert
The adjustment range of the Performance steering wheel is 60 millimetres axially and 2.3 degrees either up or down – this applies to both manual and electric adjustment. The steering wheel is lined in perforated leather in the specially formed grip area, and has a high-quality, solid metal insert and a rim with a diameter of 370 millimetres, with a flattened profile in the lower section. The best possible vehicle control is not least ensured by the specially formed steering wheel cross-section. A Performance steering wheel with leather/Alcantara inserts is available as an option.
The seven gears of the dual clutch transmission are shifted using solid metal shift paddles. A brief pull on the left (–) or right (+) shift paddle is enough to engage the required gear. Multifunction keys in the left and right steering wheel spokes provide rapid access to the audio, telephone and navigation functions, and to the LINGUATRONIC voice-operated control system. The main menu in the instrument cluster can also be accessed using the ergonomically shaped steering wheel keys.
Numerous instruments and AMG main menu
Two dial instruments provide information about the vehicle speed and engine speed, and have two small, integrated displays showing the fuel level and the engine oil temperature. When the ignition is switched on, the needles of the rev counter and speedometer simultaneously spin around to their maximum position, then instantly return to zero. Between the dial instruments there is a central display for information such as the odometer reading, range, fuel consumption, trip mileage, driving time and average speed.
The AMG main menu not only shows the individual tyre pressures at each wheel, but also has three modes for comprehensive driver information: “Warm Up”, “Set Up” and “RACE”. “Warm Up” shows the engine oil, coolant and transmission oil temperatures, while “Set Up” shows the current ESP® mode. “RACE” makes the RACETIMER available, with which the driver is able to measure lap times on a closed race circuit. Customers opting for AMG Performance Media (optional) will not find the above functions in the AMG main menu, but rather in the display of the standard COMAND APS multimedia system.
Permanently displayed information includes the currently selected gear and the activated driving mode of the dual clutch transmission – plus the time of day, ambient temperature and digital speed. Information on the navigation system, audio functions and telephone, individual vehicle settings and the ASSYST PLUS service interval display can be accessed in the central display. The gearshift indicator is located above the display, and therefore ideally in the driver’s field of vision: seven LEDs coloured white, yellow and red indicate the necessary gearshift if the driver of the SLS AMG has selected the manual (M) transmission mode. The faster the engine speed approaches the maximum of 7200 rpm, the more LEDs light up.
COMAND APS with DVD player as standard equipment
The centre console is also designed with the best possible ergonomics in mind. The upper section has an array of keys for the COMAND APS multimedia system. All the functions of the radio, DVD player, telephone and navigation system can be controlled from here. When switched on, the TFT colour display in the dashboard shows the unmistakable AMG logo for ten seconds – and depending on the function, a high-resolution map or other information such as the radio station, music track or telephone keypad. The Europe-wide navigation system has a 40-gigabyte hard disc on which the navigation data are stored, which means that route calculation is extremely rapid.
The car radio with integrated CD/DVD player features an FM/MW/SW and LW twin tuner with automatic station search, RDS, a 4 x 25 watt amplifier and a total of 6 loudspeakers. In addition, COMAND APS includes a music server with a memory capacity of 6 gigabytes, which enables the driver to store up to 1500 music files. A DVD player for video and audio is also on board, and an integrated 6-disc DVD changer is available on request. Below the DVD aperture the unit has an adapter that enables various PC memory cards for the reproduction of music files to be used. External audio devices such as an “iPod” can be connected to COMAND APS via the optional Media Interface. As a standard feature, Mercedes-Benz combines COMAND APS with the LINGUATRONIC voice-operated control system and the Bluetooth interface, which provides a wireless connection between the mobile phone and the hands-free system.
AMG DRIVE UNIT with E-SELECT lever
One of the visual and functional highlights in the interior of the SLS AMG is the solid centre console, which immediately calls an aircraft cockpit to mind. All the central control functions including the AMG DRIVE UNIT, which is inclined towards the driver, are grouped on this striking, solid-metal feature also optionally available in genuine carbon-fibre. The AMG E-SELECT shift lever with embossed AMG emblem for the AMG SPEEDSHIFT DCT 7-speed sports transmission also has a jet aircraft look: the one-touch drive-by-wire system enables the driver to shift between R, N and D extremely rapidly. When the car is stationary, simply pressing the P-key activates the parking position – this also happens automatically when the engine is switched off. To the left are the rotary controls for the transmission’s driving modes, including RACE START, as well as the keys for the ESP® functions, the extendable rear aerofoil, the AMG RIDE CONTROL sports suspension and the AMG memory function.
The engine start button is also integrated into the AMG DRIVE UNIT: this lights up in red when the vehicle is unlocked. When the button is pressed, the “Engine Start Stop” flashes during the starting process.
The Controller directly integrated into the centre console operates the mutimedia system COMAND APS. This rotary/push control can be moved in seven directions: turning the controller selects the main menu and submenus on the display, while pushing it activates or confirms the displayed function or setting. The buttons next to the Controller marked with “R” and “C” symbols are used to quit submenus quickly or delete entries.
Optional Bang & Olufsen BeoSound AMG surround sound system
The new sound system realised by Mercedes-Benz and AMG together with the famous Danish audio specialist Bang & Olufsen was developed specifically for the SLS AMG Roadster. The Bang & Olufsen BeoSound surround-sound system with Dolby Digital 5.1 provides an exclusive listening experience at the highest level. This is not only thanks to the amplifier with a total output of 1000 watts and 11 loudspeakers, but also to the sound processor’s precise distribution of the music signals to selectable driver, passenger or central positions. The digital sound processor (DSP) also makes it possible to choose between a high-end studio sound (“Reference”) and surround-sound. All the functions are controlled via a special Bang & Olufsen menu in COMAND APS. Particular highlights are provided by two illuminated 50-watt lens tweeters on the dashboard. As a Roadster-specific feature, a 250-watt subwoofer is integrated into the aluminium cross-member behind the seats. High-quality loudspeaker covers bearing the Bang & Olufsen logo indicate the exceptional status of this high-end system.
THERMOTRONIC comfort automatic climate control as standard
The sophisticated THERMOTRONIC two-zone luxury automatic climate control system is included as standard for outstanding climatic comfort. A powerful air conditioning compressor ensures rapid cooling of the interior; the cooled air flows from the four multi-adjustable vents in the dashboard, two apertures in the A-pillars, three at the windscreen and one in each footwell. Sensors constantly monitor the interior temperature, the temperature of the air flowing from the air vents, the air moisture content and the intensity and angle of the sun. A pollutant sensor recognises excessive carbon monoxide and nitrogen oxide concentrations in the outside air, and automatically closes the air recirculation flap if levels of these pollutants increase rapidly. A key with an Off symbol switches THERMOTRONIC off if required – for example if it is not needed because the soft top is open.
The modern, short-travel control keys in the SLS AMG require an operating force of only four newtons. All keys and switches are treated with Softtouch paint, which creates a silky sheen and a soft surface. The homogeneous, amber-coloured illumination of the control symbols ensures easy recognition, and also underlines the high-quality appearance of the interior when driving at night.
A wealth of stowage spaces for typical Mercedes day-to-day suitability
The interior also impresses with practically designed stowage facilities for typical Mercedes day-to-day suitability. The glove compartment with a capacity of 3.7 litres and a spectacles compartment is in the dashboard on the passenger side. To the right of the E-SELECT lever there is a small compartment with a 12 V socket or on request an ashtray with cigar-lighter. The armrest behind the centre console not only facilitates operation of the COMAND Controller, as it also has the conveniently integrated control switch for the electrically operated fabric soft top.
The armrest can be moved in two stages at the touch of a button, revealing a stowage compartment in which there are two cupholders and a telephone cradle (optional). Other items can be stowed in compartments in the doors, the stowage system on the rear bulkhead between the seats and the map pocket in the passenger footwell. Two clothes hooks are attached to the seat backrests. The unlocking switch for the boot lid is located below the light switch in the dashboard. Alternatively the boot can also be opened using the button in the vehicle key. The boot has a capacity of 173 litres (acc. to VDA measuring method).
Overview of the comprehensive standard equipment (selection):
Optional extras include the following (extract):
Even more individuality is possible with optional extras from the AMG Performance Studio:
The Mercedes-Benz SLS AMG is now even more attractive and individual thanks to the new high-tech option of the AMG RIDE CONTROL sport suspension with adaptive damping that combines concerted performance-orientation with optimal comfort on long journeys. Blind Spot Assist improves active safety on board the gull-wing model. Further optional features such as AMG 10-spoke forged wheels painted in matt black, red-painted brake callipers or AMG high-gloss black trim make for even more exclusivity.
A glance at the center console of the SLS AMG not only reveals the stylishly designed, new E-SELECT lever with its embossed AMG emblem, but also a new shock absorber symbol in the AMG DRIVE UNIT. This key symbolises the new AMG RIDE CONTROL sport suspension with variable, electronically controlled damping. Depending on the driving situation, speed and road surface conditions, this optional system almost instantly varies the damping characteristics and automatically reduces the body roll angles. For the driver this means immediate and variable adaptation between the greatest possible agility and the best possible ride comfort – for any driving style and route.
Maximum individuality: “Comfort”, “Sport” and “Sport plus”
A small key with a major effect: pressing the shock absorber symbol allows individual, convenient adjustment of the damping characteristics. There is a choice of three modes: “Comfort”, “Sport” and “Sport plus”. The currently selected mode is shown in the AMG main menu.
“Comfort” is automatically active whenever the engine is started, and provides a sensitive damper responce with comfort-oriented characteristics. “Comfort” is recommended for cruising at moderate speeds – e.g. in urban traffic or on motorway sections with speed restrictions. But even on poor, bumpy road surfaces, “Comfort” mode will be the first choice of many SLS AMG drivers by virtue of the softer damper setup.
To select “Sport” mode the key in the AMG DRIVE UNIT is pressed once. The left control lamp in the key and the AMG main menu display tell the driver that “Sport” mode has been manually activated. In “Sport” mode the shock absorbers have a tauter response depending on the driving situation, which not only ensures better road contact when driving in a sporty manner, but also more effectively reduces body roll and pitching. In most driving situations, “Sport” mode provides the best compromise between satisfactory suspension comfort, low body movements and high agility.
“Sport plus” is recommended for fast lap times on a race circuit: apart from higher damping forces, this mode has special control algorithms configured for a decidedly sporty driving style on uneven road surfaces. The driver is able to store his personal setup using the AMG key in the AMG DRIVE UNIT. Sustained pressure on the AMG symbol stores the currently selected suspension mode and also the selected transmission mode. As before, the driver has four different transmission modes available: fuel economy mode “C” (Controlled Efficiency), “S” (Sport), “S+” (Sport plus) and “M” (Manual). Brief pressure on the AMG key quickly and conveniently activates the preferred combination.
With immediate effect, the new AMG RIDE CONTROL sport suspension is available on request for the SLS AMG Coupé and Roadster. Alternatively the gull-wing model is available with the basic AMG suspension or the AMG Performance suspension, both without variable damping characteristics.
Numerous parameters monitored by electronics
The electronic damper control is based on acceleration sensors which register dynamic vehicle body and wheel movements, both absolutely and in relation to each other. Other factors relevant to the driving dynamics, such as drive and braking moments, the steering angle and lateral/linear acceleration are continuously registered and evaluated. The current vehicle speed, wheel rotation speeds and selected gear ratios are also continuously analysed. High-performance control electronics in permanent dialogue with the engine and transmission control unit ensure that the forces of the four newly developed shock absorbers are adapted practically instantly.
Depending on the selected suspension mode, different control configurations and parameter weightings are active to strike the best possible balance between comfort and dynamic performance. Electromagnetically actuated valves in the shock absorbers control the oil flow between the lower and upper chamber. In “Comfort” mode more oil flows through the valves, and less in “Sport” and “Sport plus” mode.
Double wishbone suspension of forged aluminium
All four wheels are located on double wishbones with a track rod, a technology that has proven itself in motor racing right through to Formula 1. With a double-wishbone axle, the wheel location and suspension functions remain separate; the spring/damper struts are supported on the lower wishbone. The double-wishbone concept with its high camber and track rigidity positively locates the wheel with minimal elastic movements, providing the driver with an optimum sense of road contact when driving at the limits.
Wishbones, steering knuckles and hub carriers at the front and rear are made entirely from forged aluminium – substantially reducing the unsprung masses; this configuration also notably improves the suspension response. The long wheelbase of 2680 millimetres not only results in outstanding straight-line stability but also low wheel load shifts, significantly reducing the vehicle’s tendency to dive and squat when braking and accelerating. The broad track width – front 1682, rear 1653 millimetres – ensures lower shifts in the wheel loads from the inner to the outer wheel when cornering, enabling the tyres to retain more grip.
The chosen solution with a front-mid-engine plus transaxle configuration ensures an ideal front/rear weight distribution of 47 to 53 percent. Mounting the engine behind the front axle has created the ideal conditions for consummate driving dynamics with precise steering, first-class agility, low inertia with spontaneous directional changes and outstanding traction.
Direct steering, differential lock and 3-stage ESP®
The rack-and-pinion steering gear provides a consistently direct steering feel with a constant mechanical ratio of 13.6:1, in tune with the high expectations placed on a super sports car. The power steering provides speed-sensitive assistance and improves feedback for the driver as the road speed increases: an indispensable factor for high-speed straight-line driving. Mounting the steering gear in front of the engine on the integral subframe enables the engine to be set down very low. The SLS AMG comes with 3-stage ESP® as standard, providing the driver with access to the three “ESP ON”, “SPORT Handling mode” and “ESP OFF” modes at the touch of a button. In “ESP OFF” mode too, vigorously operating the brake pedal restores all the normal ESP® functions.
The acceleration skid control (ASR) system’s traction logic is active in all three ESP® modes. If one of the drive wheels starts to spin, specific brake pressure is applied to improve traction significantly – especially in conjunction with the standard-fit mechanical multi-disc limited-slip differential. This means that the engine power is transferred to the road even more effectively when driving in a particularly dynamic style.
Blind Spot Assist increases active safety
The new, optionally available Blind Spot Assist is able to increase active safety. This visual and acoustic warning system uses the close-range radar sensors of the standard PARKTRONIC system to recognise vehicles in good time where visibility is restricted. When the system registers another vehicle in the blind spot, this is indicated to the driver by a red triangle lighting up in the relevant exterior mirror. An acoustic warning also sounds if the driver operates the indicators despite the visual warning.
Blind Spot Assist is operational from a speed of 30 km/h. It monitors the area around the vehicle to a distance of around 3.5 metres on each side and three metres beyond the rear. Vehicles in the process of overtaking are shown immediately when they enter the monitored area of the difference in relative speeds between the two vehicles is not more than 16 km/h. Vehicles that have just been overtaken are however shown with a delay of 1.5 seconds after entering the monitored area, thus preventing distraction by unnecessary warnings.
New optional appointments for more style and design
Available as an optional extra, the car’s visual appearance is enhanced by weight-optimised AMG 10-spoke forged wheels shod with tyres in size 265/35 R 19 (front) and 295/30 R 20 (rear). Their matt black paint finish corresponds perfectly with the high-sheen rim flange. Optional red-painted brake callipers all-round provide a further visual highlight.
Single-tone or two-tone designo leather in espresso brown is available as a new interior colour – this dark shade of brown perfectly matches the new metallic paint finish AMG Sepang brown. New AMG high-gloss black trim (optional) is an exclusive alternative to the standard centre conslole in solid metal or the optional carbon-fibre trim.
All prices for the new features at a glance (incl. 19 % VAT):
Mercedes-Benz is preparing a bona fide foe for the popular Audi TT Roadster in the shape of the long-awaited SLA, according to Australia’s GoAuto. The two-seat soft-top convertible is expected to hit the streets in 2013 with a starting price around $65,000. Though originally based on the Mercedes A-Class, speculation has the Mercedes SLA being based on the new B-Class architecture meaning the SLA will be the first roadster for Mercedes-Benz to have front-wheel-drive.
Engines expected in the SLA include a 1.6-litre turbo-charged direct-injection four-cylinder petrol engines, mated to Mercedes’ upcoming seven-speed dual-clutch gearbox, as well as a six-speed manual transmission. Also possible for the Mercedes-Benz SLA is a new 1.8-litre four-cylinder turbo-diesel models.
Information on the Mercedes-Benz Vision SLA Concept is below.
The facts
Technical highlights
‘Arousing curiosity … firing the emotions … thinking ahead … anticipating the future and translating new ideas into reality – the designers at the Mercedes Technology Centre in Sindelfingen certainly have an interesting job. Their “present” is the future. And sometimes they give us glimpses of that future by bringing out concept cars – cars which show us how we will be getting around in a number of years’ time. The new Vision SLA is one such glimpse.’
This was how Mercedes-Benz introduced the Vision SLA when it made its public debut at the Detroit Auto Show in January 2000. A small roadster based on the A-Class, the Vision SLA’s aim was to translate the appeal and driving enjoyment of the SL series into an altogether smaller segment.
Reflecting its A-Class parentage Vision SLA had compact dimensions, with an exterior length of 3.77 metres promising a nippy driving experience – the SLK (R 170) was 20 centimetres longer, the SL (R 230) no less than 73 centimetres longer. Key design features of the compact roadster concept included powerfully sculpted fenders, a sharply raked windshield, large doors and a gently slanting rear in the style of the legendary Mercedes-Benz Silver Arrows. Two particularly innovative features were a prominent front fin and a V-shaped nose borrowed from the SLR high-performance sports car, which incorporated a centrally positioned Mercedes star.
The bodywork sheltered advanced Mercedes-Benz engineering. A 1.9 litre engine developing a maximum output of 92 kW (125 hp) and maximum torque of 180 newton metres at 4000 rpm translated into an attractive performance , with a 0-100 km/h sprint time of 7.9 seconds and a top speed of 209 km/h. High active safety standards meanwhile were provided by the A-Class-derived, slightly modified chassis with Electronic Stability Program (ESPÒ) and Brake Assist.
With the bodywork, the staff from the advanced engineering and research departments had broken new ground. The Vision SLA had an innovative hybrid body structure consisting of aluminium sections and panels and high-grade plastics. This lightweight construction allowed Vision SLA to tip the scales at just 950 kilograms (DIN unladen weight).
The A-Class influence could be seen in the safety concept too. Although the open-top two-seater wasn’t built on the sandwich principle, in the event of a serious front-end impact it used the same bright idea as the A-Class of shunting the engine out of the way underneath the passenger compartment. The positioning of the engine at an angle ensured that in an impact it would slide down along the sturdy front floor panel without intruding into the passenger compartment. This gave Vision SLA the same high safety standards as larger Mercedes-Benz sedans. Roll-over protection was provided by sturdy roll-over bars behind the seats and by a reinforced front windshield frame.
Once again, lighting was an important development focus. At the rear, 30 high-performance LEDs, with prisms to disperse the light, provided a more effective rear warning system than conventional bulbs, particularly in conditions of poor visibility. It took the form of vertical bands. The powerful LED turn signals, housed on fins inside the light housings, were likewise innovative and designed to attract attention. High-performance LEDs were also used for the brake lights, which were mounted in the rear bumper and in the rear crossbar on the trunk lid. Evenly dispersed road illumination and a long beam range were provided by state-of-the-art xenon projector-beam headlamps which used two separate headlamps for the dipped beam and the high beam.
At the front, the transparent ends of a frontal fin spanning the full width of the car incorporated yellow high-performance LED turn signals, which were supplemented by repeater LEDs in the exterior mirror casings.
Inside, the accent was on lightweight design. The technical aspects were woven neatly together with styling features suggesting lightness and transparency, such as perforated sheet metal, aluminium rotary controls and aluminium instrument cylinders. Carbon fibre bucket seats, adopted in slightly modified form from the Vision SLR, continued the theme – they were approximately 25 per cent lighter than similarly specified conventional car seats.
The cockpit recalled sports cars and tourers of earlier years. The chronometer-style instruments normally supplied data only on speed, rpm, oil pressure, and fuel level. However, other displays appeared behind the dials when needed, in the event of a malfunction.
In all respects Vision SLA put the accent on a natural and unfiltered motoring experience. This was at the heart of this roadster’s charm and was reflected in the interior design. Carpeting and fabric upholstery had been dispensed with in favour of painted metal surfaces and dark brown, specially supplied saddle-quality leather. This leather was tanned using only vegetable matter, thus helping to preserve its very special character. A natural material with a strong air of quality, hard-wearing and also very breathable, it was used on the dashboard, on the insides of the doors and in areas exposed to frequent occupant contact, such as the steering wheel, the seat surfaces, the armrests in the doors and the floor. The cut edges were deliberately left visible, with light-coloured stitching providing a colour contrast and hand-finished effect.
The 2012 Mercedes-Benz SLK55 AMG Roadster offers a plethora of both standard and optional packages. Beginning on the inside, the design of the SLK55 AMG is reminiscent of its bigger brother, the SLS AMG Roadster. Similarities with the super sports car come from the four air vents in the style of jet engines, as well as the center console finished in brushed aluminum. Placed in the center of the dashboard is an AMG-specific analog clock featuring an IWC design. The AMG Performance steering wheel, with its flattened top and bottom sections, also boasts metal trim, aluminum shift paddles and grip areas finished in perforated leather.
The SLK55 AMG offers a host of the latest assistance systems support the driver and help secure the new AMG Roadster’s exceptional position in its segment. Standard equipment includes new, fiber-reinforced roll-over bar, two-stage driver and front passenger airbags, headbags, thorax airbags, knee airbags, seat belt tensioner with belt force limiters, NECK-PRO crash-active head restraints, three-stage ESP® and also ATTENTION ASSIST drowsiness detection.
In addition, the optionally available AMG Handling Package enhances the vehicle’s sportiness even further. It comprises an AMG Performance suspension with stiffer tuning, an AMG rear axle differential lock, two-piece brake discs at the front and a three-spoke AMG Performance steering wheel finished in premium leather with Alcantara inserts in the grip areas.
See the standard and optional equipment list below.
Performance/Handling
Safety/Security
Optional Packages
Multimedia Package ($TBD)
Lighting Package ($TBD)
AMG Handling Package ($TBD)
Stand Alone Options
Paint
Black, Obsidian Black, Mars Red, Arctic White, Steel Grey, Iridium Silver,
Palladium Silver, Pearl Beige, Diamond White, Indium Grey, Silver Mist*, Lunar
Blue,* designo Mystic Blue, designo Mocha Black, designo Graphite, designo Magno Alanite Grey, designoMagno Cashmere White
Upholstery
Black Premium Leather, Sahara Beige Premium Leather, Bengal Red/Black Premium Leather, designoAuburn Brown, designo Espresso, designo Saffron Beige, designo Classic Red, designo Porcelain,designo Platinum White, designo Light Brown, designo Jet Black, designo Red Pepper, designo Deep White, designo Red Pepper Two-Tone, designo Platinum White Two-Tone, designo Light Brown Two-Tone, designo Deep White Two-Tone, designo Sand Two-Tone, designo Saffron Beige Two-Tone,designo Classic Red Two-Tone, designo Porcelain Two-Tone, designo Auburn Brown Two-Tone (note: sun-reflecting leather)*
* = highlight for 2012MY
Mercedes-Benz is currently road testing their much beloved SL roadster, which will likely come to market in mid 2012. Just like the SLK, the SL will likely offer Magic Sky Control with the Vario Roof optional.
The next-generation SL will mimic styling of the SLK and SLS AMG. with engine options likely to include a 306 PS (225 kW / 302 hp) 3.5-liter V6 as well as a twin-turbo 4.6-liter V8 with 408 PS (300 kW / 402 hp) and 600 Nm (442 lb-ft) of torque. Furthermore, the SL63 AMG could be powered by a twin-turbo 5.5-liter V8 with 544 PS (400 kW / 537 hp) and 800 Nm (590 lb-ft) of torque and 571 hp with the performance package.
The technology in the SL will be updated by including the latest assistance systems, like lane assist and sign recognition. The interior of the new SL will house a steering wheel and center console controls reminiscent of the CLS, the ventilation nozzles will be the same as in SLS, SLK, or new B-Class, centered is the Command with fixed display framed between two air vents.
So far there are no official details about price, but keep in mind that the 2013 Mercedes-Benz SL63 AMG will come with a slightly higher price than that of the current model, which cost $139,050.
Photos via Mercedes-Benz Passion
The facelifted Mercedes-Benz SL received a new tuning package from Piecha Design that offers both function and style updates.
Design updates include new spoilers, daytime running lights and a four-tailpipe stainless steel sport exhaust system. In addition, there is also a lowered suspension to reduce the riding height by 30mm and to finish the R230 off, 20-inch alloy wheels.
A power converter and a updated roof module enable the hardtop to be opened or closed at speeds of up to 37 mph.
PIECHA DESIGN – Mercedes-Benz SL R230 Facelift 2008
A true designer car!
Things that are timeless and good just don’t tend to go out of fashion. The Mercedes-Benz designers provided perfect proof of that with the R230-series SL. They were far ahead of their times. By now, the famous roadster is in its eleventh year of production. Its looks have remained nearly identical through the years.
For all SL R230 models starting at the March 2008 facelift, Mercedes specialist PIECHA Design from Rottweil offers a comprehensive refinement package.
PIECHA is the only tuner to develop special build-in housings with LED daytime headlights, incl. fog lamp. They can be delivered ready for installation for the serial bumper and the AMG bumper of the SL63 and SL65. For the serial bumper, a refined, elegant, three-part front spoiler lip was developed as well to harmonise perfectly with the daytime headlights. PIECHA also offers a harmonious rear spoiler lip that is as elegant as it is effective. It provides an additional push down on the rear axle.
Elegant: PIECHA MP1 Monoblock!
The new PIECHA MP1 monoblock wheel rims in the front-polished titanium silky-gloss version are true eye-catchers. They are available at 9.5×20 with 255/30 R20 for the front, and at a gigantic 11×20 with 305/25 R20 for the rear wheel cases of the SL. The beautiful brand-new PIECHA designer wheel set matches all the CLS models of the 219 and 218 series with the same tyres. The car body also does not require any rework. Proper wheel covering, however, requires that the chassis is lowered.
The SL-chassis can be lowered either by classic Piecha lowering springs (-30 mm) for the coil-spring version, or a Piecha-lowering module (-30 mm) for the ABC-chassis.
PIECHA Quadro 4-tube exhaust system!
The stainless steel PIECHA Quadro sports exhaust system installed at the tail is a true designer piece. With its four end tubes in right/left loops, it ensures sportively perfect symmetry and a saturated, low growl.
There are some “must have” products that should be installed in any SL. Among others, they are the legendary PIECHA power converter to ensure clearly improved acceleration, and the comfort vario roof module with many additional comfort functions, among others permitting opening and closing of the roof at a speed of up to 60 km/h.
The result: Good can still be improved! As usual, PIECHA Design presents a plethora of interesting tuning components for the R230-series SL, every single one of them matching the car body lines of the cult roadsters in unparalleled perfection.
Prices for the new PIECHA MP1 monoblock wheel rims:
The all new Mercedes-Benz SLK 250 CDI marks a first for Mercedes, combining a SLK Roadster with their famous diesel engines. The diesel roadster boasts 150 kW (204 hp) four-cylinder power unit putting the two-seater at the top of its class in many respects. Most notably, it is the most economical roadster in its segment, getting 62 miles per 1.3 gallons of diesel. Thanks to its enormous torque of 500 newton metres it accelerates from zero to 62 mph in 6.7 seconds, and gives drivers a top figure for acceleration from 50 to 75 mph in just 4.3 seconds. The new SLK 250 CDI can be ordered from September 13, 2011. The price including VAT is € 41,828.50.
Diesel drive and roadster excitement do not go together – or so a common misconception would have it. Mercedes-Benz impressively demonstrates the contrary with the new SLK 250 CDI. Its four-cylinder diesel engine with a displacement of 2143 cc generates an output of 150 kW (204 hp) and 500 newton metres of torque – as much as a petrol engine with twice the displacement would normally generate. This makes the new SLK 250 CDI the most powerful diesel model in its class, and gives the roadster the potential for extremely sporty performance.
Equipped with the standard 7G-TRONIC PLUS automatic transmission (a six-speed manual transmission will follow in the second quarter of next year), the diesel SLK sprints from zero to 100km/h in 6.7 seconds and achieves a top speed of 243 km/h. Moreover, the flexibility of the SLK 250 CDI is nothing short of phenomenal. Thanks to its enormous diesel torque it accelerates from 80 to 120 km/h in just 4.3 seconds – easily the best figure in this class, making for safe and effortless overtaking.
Apart from this, the SLK 250 CDI is the most economical and therefore environmentally compatible roadster in its segment. It is happy with 4.9 litres of diesel fuel per 100 kilometres (NEDC combined consumption), which corresponds to CO2 emissions of 128 g/km. In other words, the diesel SLK combines thoroughbred sports car performance with the fuel economy of a sub-compact. This guarantees great driving pleasure with great fuel efficiency.
The diesel engine achieves its exemplary output, torque, fuel consumption and emissions figures, as well as its highly impressive smoothness for a diesel unit, thanks to an extensive package of innovative technologies. These include fourth-generation common-rail injection with a rail pressure of 2000 bar and precise injection timing, as well as two-stage turbocharging. Like all SLK models, the SLK 250 CDI also features a start/stop system as standard.
The frugal fuel consumption makes the SLK 250 CDI a car with superior long-distance qualities. Using the European motorways, it is e.g. quite possible to drive from the North Sea to a beach on the Mediterranean non-stop. Very comfortable sports seats, a comfortable suspension setup and the largest luggage capacity in this segment also do their bit to create the right conditions.
As it shares the same genes with the other members of the successful SLK family, the SLK 250 CDI combines lightfooted sportiness with stylish comfort, a striking sports car design and absolute day-to-day suitability, while delivering top performance with exemplary ecology. This means that the diesel version too provides open-top driving enjoyment at an extraordinarily high level.
The SLK 250 CDI is likewise available with a choice of three versions of the famous vario-roof – one of them the panoramic vario-roof with MAGIC SKY CONTROL. This glass roof can be changed from dark to transparent at the touch of a button. There are also three suspension versions available: a conventional steel suspension, a sports suspension with a stiffer spring and damper setup or a suspension with an electronically controlled, fully automatic damping system. The latter is part of the Dynamic Handling package, which also includes the Direct-Steer system and the Torque Vectoring Brake developed by Mercedes-Benz for particularly agile and predictable handling characteristics.
Externally the new SLK 250 CDI is no different in appearance from the petrol models. It even retains the twin exhaust system, and therefore has the same exciting look for which all the SLK models are known.
The new SLK 250 CDI can be ordered from September 13, 2011. The price including VAT is € 41,828.50.
A sporty designer suit, custom-tailored wheels with diameters of up to 20 inches complete with corresponding suspension options, performance tuning for all engines and exclusive interior design: BRABUS now offers an extensive customization program for the new Mercedes SLK.
Sporty-elegant BRABUS aerodynamic-enhancement components give the roadster an even more thrilling appearance. The two BRABUS front spoiler lips that attach on the left and right side of the production apron and the striking bezels for the daytime running lights lend the SLK a more striking nose. But that’s not all: the spoilers also reduce lift on the front axle which particularly benefits directional stability at high speeds.
The BRABUS side sill attachments emphasize the sporty lateral lines of the car and seem to make the rear fenders wider visually. The rear of the car receives some added sporty character with the BRABUS diffuser and the BRABUS rear spoiler on the trunk lid. The diffuser is integrated with utmost precision into the production bumper and features a centrally mounted rear reflector. These aerodynamic-enhancement components also serve more than just a visual function; they reduce lift in the rear as well.
A major contribution to the sporty appearance of the new SLK from Bottrop likewise comes from the BRABUS Monoblock wheels, which are available in various one-piece or multi-piece designs with diameters ranging from 17 to 20 inches.
The attached photos show the roadster equipped with BRABUS Monoblock F wheels painted the new exclusive ‘Liquid Titanium’ color. They are mounted in size 8.5Jx20 in front and in size 9.5Jx20 on the rear axle. BRABUS recommends high-performance tires from Continental, Pirelli or YOKOHAMA in sizes 235/30 ZR 20 on the front axle and 275/25 ZR 20 in back.
BRABUS sport springs were custom-developed to match the conversion to these king-sized tires. They are calibrated to work with the production shocks, and lower the ride height of the two-seater by some 30 millimeters (1.2 inches). BRABUS also offers various versions of its high-performance brake systems for the new SLK.
These measures furthermore make the new SLK perfectly suited for some extra power. In a first step BRABUS offers efficient and reasonably priced BRABUS ECO PowerXtra CGI tuning for the four-cylinder direct-injection engines. The processor-controlled BRABUS ECO PowerXtra CGI auxiliary control modules are custom-tailored to each respective engine variant and can be installed by any authorized Mercedes-Benz dealer in less than an hour thanks to their ‘plug and play’ design. All performance kits are backed by the one-of-a-kind BRABUS Tuning Warranty® of three years, up to 100,000 kilometers / 62,000 miles (updated November 2006). BRABUS recommends Aral high-performance lubricants.
To retain the engine’s longevity and fatigue strength these kits are designed to only activate the performance-enhancing mapping when all parameters such as engine temperature etc. are in the green. This effectively prevents the performance increase from negatively affecting the service life of the engine.
After the installation of the BRABUS ECO PowerXtra B20 CGI performance kit the four-cylinder direct-injection engine of the SLK 200 BlueEFFICIENCY produces an extra 26 hp (25 bhp) / 19 kW of power and an additional 30 Nm (22 lb-ft) of peak torque.
The new SLK 250 BlueEFFICIENCY can be upgraded at BRABUS in two stages. The BRABUS ECO PowerXtra B25 CGI module bumps power output of the four-cylinder direct-injection engine from standard 204 hp (201 bhp) / 150 kW to 230 hp (226 bhp) / 169 kW at just 5,500 rpm.
Another ten additional horsepower can be realized with the supplementary installation of a larger intercooler and an electronically controlled BRABUS sport wastegate valve that are part of the BRABUS ECO PowerXtra B25S CGI performance kit. 240 hp (236 bhp) / 176 kW of power and 370 Nm (273 lb-ft) of torque in overboost mode accelerate the two-seater in 6.2 seconds from rest to 100 km/h on the way to a top speed of 248 km/h (154 mph).
On the road all CGI engines performance-tuned by BRABUS deliver not just excellent driving performance but also optimized pulling power from low engine speeds and favorable fuel economy. Just as important for the BRABUS engine specialists were exemplary low emissions: like the corresponding non-tuned engines all engines with BRABUS ECO PowerXtra CGI performance kit meet strict EURO V emission limits.
The installation of the BRABUS stainless-steel sport exhaust system is advantageous not only for tuned engines. Its four tailpipes featuring the typical BRABUS design not only give the roadster an even more exclusive appearance but also produce an even sportier exhaust note for all engine variants.
Another focus of the BRABUS refinement of the new Mercedes SLK is the interior. BRABUS offers an extensive program for the roadster: it includes attractive accessories such as high-gloss polished stainless-steel scuff plates with BRABUS logo and sporty elements such as aluminum foot pedals and shifter.
Requests for even more individuality can be fulfilled by the BRABUS upholstery shop in the form of exclusive interiors crafted from especially soft and breathable BRABUS Mastik leather and Alcantara.
The latest information on the 2012 Mercedes-benz SL63 AMG was revealed today, as a prototype of the next generation model was spotted on the Nurburgring race track. The 2012 Mercedes SL63 AMG being tested is dressed completely in camouflage, so there’s not much on the design we can comment on. A new rear diffuser, redesigned taillights, a smaller boot lid spoiler and a new exhaust system with two double pipes are the only styling elements of the 2012 SL63 AMG that can be seen.
If early reports are correct, Mercedes will fit the 2012 SL63 AMG with the new 5.5-liter biturbo V8 engine, which is available in various outputs. The 2012 Mercedes SL63 AMG is expected to get a 536 hp and 800 Nm of torque version.
There are also rumors saying that Mercedes-Benz will offer a Performance Package for the 2012 SL63 AMG. This will increase the output of the car to 563 hp and 900 Nm of torque.
We’ll have more information on the 2012 Mercedes SL63 AMG as it is released.
Source: WorldCarFans
Arriving in the U.S. and hitting showrooms this month are the all new 2012 Mercedes-Benz SLK roadsters. The new-generation 2012 SLK roadsters represent the third generation of the first sports car offering an automatic retractable hardtop. The new SLK boasts a wide SLS AMG-inspired front grille with a long hood as well as relatively wide doors and a short rear section. The SLK convertible is available in U.S. showrooms this month with a suggested retail price starting at $54,800 (excluding D&D).
MAGIC SKY CONTROL
The standard convertible roof panel is made of body-color polycarbonate, and an optional Panorama Roof features a see-through panel. Also optionally available is a MAGIC SKY CONTROL roof, in which the tinting of the panel can be changed by the occupants, using the same electrochromic technology as automatic dimming mirrors. Sandwiched between two layers of glass, a chemical film called a matrix polymer holds oblong nano particles that line up uniformly when electrical current is applied, allowing light to pass through. When the electrical current is turned off (via a button above the rearview mirror), the nano particles disperse randomly, reducing light and tinting the roof panel.
New Direct-Injection Engines
The 2012 SLK line debuts with the SLK350 model, powered by a new 3.5-liter V6 engine that features direct injection and multi-spark ignition. With even more power and better fuel economy than its predecessor, the new SLK engine generates 302 horsepower and 273 lb.-ft. of torque. Early next year the SLK250 will join the line-up featuring a new turbocharged 1.8- liter direct injection four-cylinder engine that produces 201 hp and 229 lb.-ft. of torque.
New Transmission
The 2012 SLK line features a new transmission with a more advanced torque converter lockup clutch that provides even better fuel mileage, more responsive driving, quieter operation and increased durability. The new transmission is also designed to work best with a new type of low-viscosity ATF transmission fluid – colored blue instead of the usual red. Together with new planetary gears, bearings and internal seals, the “FE-ATF” fluid provides less friction and improved fuel mileage.
ATTENTION ASSIST
The SLK comes standard with the innovative “ATTENTION ASSIST” system, which couples a steering movement sensor with intelligent software that can identify the erratic steering corrections drivers make as they begin to get drowsy. When the system senses drowsiness, a warning message appears in the instrument cluster, and the driver is also alerted by a display that says, “Time for a rest!” Sophisticated enough to disregard sporty driving, the system works between 50 and 100 mph. Elegant in its simplicity, ATTENTION ASSIST essentially adds new computer software to existing sensors.
The First Retractable Hardtop in Modern Times
Spearheading a trend that’s still changing the auto industry, the latest SLK is best known for its distinctive retractable hardtop. With the top up, it’s a quiet, weather-tight coupe – push a button, and about 20 seconds later, the car is topless. Thanks to its pivoting rear window, the folded roof of the SLK takes up relatively little trunk space. Like the retractable hardtop of the larger SL model, the rear window of the SLK pivots to match the curvature of the top as it’s being lowered.
AIRSCARF and AIRGUIDE
An optional AIRSCARF system can extend the open-air driving season into the cooler months. Built into the seatbacks of the SLK, the neck-level heating system blows warm air from the driver and passenger-seat head restraints, allowing occupants to cruise comfortably with the retractable hardtop open in cooler weather. AIRSCARF even compensates automatically for changes in vehicle speed.
A standard fabric air deflector mounts to the SLK roll bars, helping to reduce air buffeting. Going a step further, an optional AIRGUIDE wind deflector mounts to the back of the roll bars. Consisting of two Plexiglas panels, the wind deflectors can be adjusted independently by the driver and front passenger.
AMG, the performance brand within Mercedes-Benz Cars, unveiled their new dream-car, the SLS AMG Roadster, ahead of its debut at the Frankfurt Motor Show. This super sports car thrills with a perfect synthesis of open-top driving pleasure, outstanding driving dynamics and systematic lightweight construction. The overall visual appearance of the new two-seater is marked by its purist design.
The technological highlights of the Mercedes-Bez SLS AMG Roadster read like an A-B-C of modern sports car engineering: the combination of an aluminium spaceframe body, an AMG 6.3-litre V8 front-mid engine with dry sump lubrication developing a peak output of 420 kW (571 hp) and 650 newton metres of torque, a seven-speed dual clutch transmission in a transaxle arrangement and a sports suspension with aluminium double wishbones is guaranteed to make the hearts of sports car enthusiasts beat faster – while ensuring outstanding driving dynamics and roadster motoring pleasure.
The compact fabric soft top of the SLS AMG Roadster opens and closes in just eleven seconds, and can be operated on the move at speeds up to 50 km/h. The new AMG RIDE CONTROL sports suspension with electronically controlled damping is available as an attractive optional extra. It enables the damping characteristics to be modified at the touch of a button. Using the AMG DRIVE UNIT, the driver of the SLS AMG Roadster is therefore able to choose his own suspension setup. Three modes are available: “Comfort”, “Sport” and “Sport plus”.
“AMG Performance Media” is a unique new feature: this innovative multimedia system inspired by motorsport offers an unrivalled combination of numerous telemetric displays such as lateral and linear acceleration, various engine data and lap times on a racetrack, and also features high-speed mobile internet access.
Dr. Dieter Zetsche, Chairman of the Board of Management of Daimler AG and CEO of Mercedes-Benz Cars: “The SLS Roadster is a super sports car, cruiser and highly desirable dream-car all in one. It its distinctive way, it continues the succession of iconic and exciting sports cars from Mercedes-Benz.”
Ola Källenius, Chairman of Mercedes-AMG GmbH: “Systematic lightweight construction, outstanding performance and a breathtaking design combined with sensuous open-air driving pleasure – the new SLS AMG Roadster perfectly embodies the AMG philosophy of German engineering and craftsmanship. The gull-wing model has already thrilled sports car fans all over the world, and now the open-top version is bound to cause a sensation.”
Purist roadster design with perfect proportions
The new Roadster adds a second exciting dream-car to the AMG model family. Head of Design at Mercedes-Benz, Gorden Wagener: “As in the gull-wing model, the purist, athletic design immediately captures the attention. Whether with the roof open or closed, the SLS AMG Roadster is an impressive visual delight!” The perfect proportions are particularly memorable: a long bonnet, the greenhouse positioned well to the rear and a short rear end. Plus the automatically extending rear aerofoil, long wheelbase, wide track and short overhangs – in short, the open-top SLS AMG likewise exudes effortless dynamism and an authentic charisma. The pronounced shoulder sections are reminiscent of tensed muscles, and suggest sheer power in combination with the large wheels in size 265/35 ZR 19 (front) and 295/30 ZR 20 (rear). The attractive metallic paint finish AMG Sepang brown and weight-optimised forged wheels in a 10-spoke design, painted in matt black with a high-sheen rim flange, are available as new optional extras.
Features reminiscent of the 300 SL Roadster, the classic dream-car from the 1950s, include not only the wide radiator grille with its large Mercedes star and the wing-shaped cross-fin, but also the fins on the bonnet and on the vehicle flanks. Like the SLS AMG Roadster, the 300 SL Roadster appeared slightly later than the original gull-wing 300 SL, but unlike in the former case both AMG dream cars are available at the same time.
Interior atmosphere as in an aircraft cockpit
The interior continues the breathtaking design idiom of the exterior, and awakens associations with an aircraft cockpit: prominent stylistic features include the dashboard in the shape of a wing section and the air vents with adjustable, cruciform nozzles reminiscent of jet engines. The extended centre console of matt, solid metal and the new E-SELECT lever in the shape of an aircraft’s thrust control are also design features adopted from the world of aviation. Another discreet, fine detail is the embossed AMG emblem on the leather-lined selector lever.
The AMG DRIVE UNIT – which like numerous other interior features is available in real carbon-fibre – is the central control unit in the centre console: it allows the driver to choose a personal vehicle setup, including adjustment of the AMG RIDE CONTROL sports suspension (optional). The AMG Performance steering wheel with its high-grade nappa leather lining and flattened lower rim section allows perfect vehicle control. The shift paddles and lower steering wheel bezel are of solid metal.
Fully automatic, weight-optimised soft top
The sensual experience in the SLS AMG Roadster is enhanced further when the soft top is open, and the powerful, naturally aspirated eight-cylinder engine with 420 kW (571 hp) and 650 newton metres of torque asserts itself and makes the heart beat faster with its typical AMG eight-cylinder sound. The fabric soft top can be opened and closed while on the move at up to 50 km/h; the fully automatic opening/closing process takes only eleven seconds. The driver only needs to operate the roof control unit conveniently integrated at the front of the centre armrest. When open, the soft top is space-savingly deposited behind the seats in a folded Z-configuration. Three soft top colours – black, red and beige – are available to suit the nine exterior and eight interior colours.
The three-layered fabric soft top is a weight-optimised magnesium/steel/ aluminium construction, and contributes greatly to the car’s low centre of gravity. The soft top has a seamlessly bonded rear window of heated single-layer safety glass. The flush, gap-free transition between the outer roof skin and the rear window keeps wind noise at a low level. A continuous, flexible water pocket running under the soft top catches rainwater and directs it to the underbody via two apertures on each side. The boot capacity is 173 litres with the roof either open or closed, and therefore roughly equal to that of the SLS AMG Coupé (176 litres).
Outstanding material quality and standard of finish
The finest leather, matt-finished solid metal or optional, real carbon-fibre trim create an exclusive ambience and correspond with the authentic feel of the cockpit. Precisely executed decorative and contrasting stitching enhances the visual impression, heightens the hand-crafted look and reflects the attention to detail which is the hallmark of Mercedes design.
The standard appointments of the SLS AMG Roadster include black designo leather, AMG sports seats with heating, a slot-in glass draught-stop, COMAND APS with DVD player, anti-theft alarm system with tow-away protection and interior monitoring, THERMOTRONIC luxury automatic climate control and the KEYLESS-GO starting function. The optionally available AIRSCARF® system exclusive to Mercedes-Benz acts like an invisible scarf warming the head and neck areas of the occupants. It is integrated into the backrests of the AMG sports seats, and blows warm air from vents in the head restraints. The airflow can be adapted for different occupant sizes by means of adjustable louvres, and the level of warmth can be selected in three stages at the touch of a button.
Leather-lined roll-over bars with integrated mesh in a “Silver Shadow” look are available in conjunction with the optional designo Exclusive leather to reduce turbulence in the cockpit. Ambient lighting is integrated into the optionally available, electrically folding exterior mirrors.
Single-tone or two-tone designo leather in espresso brown is available as a new interior colour – this dark shade of brown perfectly matches the new metallic paint finish AMG Sepang brown.
AMG Performance Media and Bang & Olufsen as optional highlights
Another optional highlight is available in addition to the Bang & Olufsen BeoSound AMG surround sound system, which provides exclusive musical enjoyment at the highest level: AMG Performance Media. In an unprecedented way, this system inspired by motor racing combines numerous telemetric displays such as engine data, lateral and linear acceleration and lap times on a racetrack, as well as providing high-speed mobile internet access. AMG Performance Media is activated by pressing the AMG key in the AMG DRIVE UNIT, and operated using the COMAND Controller. Key functions at a glance:
The different functions of AMG Performance Media are shown by the colour display integrated into the dashboard. Three displays are shown at any one time, with the most important information positioned in the centre. Digitally simulated dial instruments with red needles ensure outstanding legibility.
High-speed mobile internet access
AMG Performance Media also provides high-speed mobile internet access: when the car is stationary, the driver and passenger are able to surf the web, download and install apps, and send or receive emails – this unrivalled system has functions comparable to those of a PC, notebook or smartphone. AMG Performance Media uses the widespread, high-performance Android operating system. This exclusive new development will also be installed in other AMG high-performance cars in the future.
Specifically reinforced aluminium spaceframe, low DIN kerb weight
In addition to a high level of occupant comfort, the key factor for driving pleasure in the new SLS AMG Roadster is of course the outstanding performance. The basis for this is the innovative body design: the chassis and body are of aluminium, a design combining intelligent lightweight construction with high strength. With a DIN kerb weight of 1660 kilograms, the Roadster is only 40 kilograms heavier than the Coupé. The result is a remarkable power-to-weight ratio of 2.9 kilograms per hp.
To achieve the same level of driving dynamics despite the lack of a fixed roof, the SLS AMG Roadster has features specifically designed to rigidify the bodyshell, for example side skirts with greater wall thicknesses and more chambers. The dashboard cross-member is supported against the windscreen frame and centre tunnel by additional struts, and a curved strut between the soft top and the tank reinforces the rear axle. The omission of the Coupé roof and gull-wing doors means that the open-top SLS AMG has a reinforcing cross-member behind the seats to support the fixed roll-over protection system. This also accommodates the 250 watt subwoofer of the Bang & Olufsen BeoSound AMG high-end sound system.
All this prevents unwanted vibrations right from the start, and makes it unnecessary to use the additional, weight-increasing vibration dampers that are often found in open-top sports cars. The weight-optimised aluminium spaceframe weighs 243 kilograms, tipping the scales at just two kilograms more than the gull-wing model.
Intelligent material mix and low centre of gravity
50 percent of the intelligently designed, weight-optimised aluminium spaceframe is of aluminium sections, 26 percent of sheet aluminium, 18 percent of cast aluminium and 6 percent of steel. Maximum occupant safety requires the use of ultra-high-strength, heat-formed steel in the A-pillars.
The entire vehicle concept has been designed to achieve the lowest possible centre of gravity. This applies both to the low connection of the powertrain and axles, as well as to the arrangement of the rigidity-conducive bodyshell structure, which has been kept as low as possible. Examples include the rigid flexural and torsional connections between the front and rear section and the safety passenger cell, which have been realised consistently using force paths that are as low as possible. This results not only in a low centre of gravity but also in a harmonious and therefore efficient force path in the vehicle structure.
Passive safety at a high level
The aluminium spaceframe provides the basis for outstanding passive safety. The extensive safety features include the fixed roll-over protection system, three-point seat belts with belt tensioners and belt force limiters, and eight airbags: adaptive front airbags and kneebags, two seat-integrated sidebags and two windowbags deploying from the door beltlines.
The optionally available Blind Spot Assist helps the driver with a visual warning symbol and acoustic alert if the danger of a collision with another vehicle is detected when changing lanes.
Powerful AMG 6.3-litre V8 engine with 420 kW (571 hp)
The SLS AMG Roadster has the same, muscular engine as the gull-wing model. The 6.3-litre V8 with a peak output of 420 kW (571 hp) at 6800 rpm makes the open-top SLS one of the most powerful sports cars in its segment. Its power-to-weight ratio is 2.9 kg/hp. This naturally aspirated engine generates its maximum torque of 650 newton metres at 4750 rpm. The open-top SLS AMG accelerates from zero to 100 km/h in 3.8 seconds, and the top speed is 317 km/h (electronically limited) – which means that the Roadster has a performance comparable to the gull-wing variant.
The high-revving V8 engine with a cubic capacity of 6208 cc has the typical characteristics of powerful racing engines. It responds immediately to accelerator movements and is extraordinarily willing. The use of a dry sump lubrication system makes for a considerably lower installed position in the vehicle. The resulting, lower centre of gravity allows high lateral acceleration and ensures thrilling driving dynamics.
Achievement of demanding fuel consumption targets
Despite its uncompromisingly sporty character, very ambitious fuel consumption targets have been met. The SLS AMG consumes 13.2 litres per 100 kilometres (NEDC combined), corresponding to CO2 emissions of 308 grams per kilometre. Efficiency-enhancing measures include the familiar AMG-exclusive, friction-optimised twin-wire arc-sprayed coating on the cylinder walls as well as the on-demand, map-optimised oil supply and intelligent generator management: during the engine’s overrun phases, kinetic energy is used to charge the battery rather than being wasted by simply generating heat. Conversely, the generator is switched to no-load operation during acceleration, thus reducing the load on the engine. Sophisticated catalytic converter technology enables current and future emission standards such as Euro-5, LEV 2 and ULEV to be met.
Double-declutch transmission with transaxle configuration and torque tube
The AMG 6.3-litre V8 engine delivers its abundant power to the rear axle via an ultra-light carbon-fibre driveshaft – similar to the setup used in the DTM C‑Class racing touring car. The double-declutch transmission is mounted at the rear (transaxle principle), and connected to the engine housing via a torque tube. A carbon-fibre shaft rotates at engine speed in the torque tube. The advantages of this sophisticated solution lie in the rigid link between the engine and transmission and, in turn, the optimum support for the forces and torque generated.
The AMG SPEEDSHIFT DCT 7-speed sports transmission boasts fast gear changes with no loss of tractive force – in as little as 100 milliseconds. The driver has a choice of four different driving modes: “C” (Controlled Efficiency), “S” (Sport), “S+” (Sport plus) or “M” (Manual). In the Sport, Sport plus and Manual modes the automatic double-declutching function is active; all the modes can be selected conveniently via the rotary control in the AMG DRIVE UNIT. The RACE START function provides optimum traction — as does the mechanical differential lock, which is integrated into the compact transmission housing.
Sophisticated suspension layout with double-wishbone axles
The chosen solution with a front-mid-engine plus transaxle configuration ensures an ideal front/rear weight distribution of 47 to 53 percent. Mounting the engine behind the front axle has created the ideal conditions for consummate driving dynamics with precise steering, first-class agility, low inertia with spontaneous directional changes and outstanding traction. All four wheels are located on double wishbones with a track rod, a technology that has proven itself in motor racing right through to Formula 1. With a double-wishbone axle, the wheel location and suspension functions remain separate; the spring/damper struts are supported on the lower wishbone. The double-wishbone concept with its high camber and track rigidity positively locates the wheel with minimal elastic movements, providing the driver with an optimum sense of road contact when driving at the limits.
Wishbones, steering knuckles and hub carriers at the front and rear are made entirely from forged aluminium – substantially reducing the unsprung masses; this configuration also notably improves the suspension response. The long wheelbase of 2680 millimetres not only results in outstanding straight-line stability but also low wheel load shifts, significantly reducing the vehicle’s tendency to dive and squat when braking and accelerating. The broad track width – front 1682, rear 1653 millimetres – ensures lower shifts in the wheel loads from the inner to the outer wheel when cornering, enabling the tyres to retain more grip.
New AMG RIDE CONTROL sports suspension on request
The new AMG RIDE CONTROL sports suspension with electronically controlled damping is available as an attractive optional alternative to the AMG sports suspension. It enables the damping characteristics to be modified at the touch of a button. Using a button in the AMG DRIVE UNIT, the driver of the SLS AMG Roadster is therefore able to choose his own suspension setup. Three modes are available: “Comfort”, “Sport” and “Sport plus”. The current mode is shown in the instrument cluster.
“Comfort” delivers a sensitive response with soft damping characteristics, while in “Sport” mode the shock absorbers have a much stiffer response depending on the driving situation. This not leads to better road contact, but also effectively suppresses body roll and pitching. “Sport plus” is ideal for challenging laps on a racetrack: in addition to the higher damping force, this mode comes with specific control algorithms that have been tailor-made for a decidedly sporty driving style on level road surfaces. The new, variable suspension will also be optionally available for the SLS AMG Coupé in future.
Direct steering, differential lock and 3-stage ESP®
The rack-and-pinion steering gear provides a consistently direct steering feel with a constant mechanical ratio of 13.6:1, in tune with the high expectations placed on a super sports car. The power steering provides speed-sensitive assistance and improves feedback for the driver as the road speed increases: an indispensable factor for high-speed straight-line driving. Mounting the steering gear in front of the engine on the integral subframe enables the engine to be set down very low. The SLS AMG comes with 3-stage ESP® as standard, providing the driver with access to the three “ESP ON”, “ESP SPORT” and “ESP OFF” modes at the touch of a button. In “ESP OFF” mode too, operating the brake pedal restores all the normal ESP® functions.
The acceleration skid control (ASR) system’s traction logic is active in all three ESP® modes. If one of the drive wheels starts to spin, specific brake pressure is applied to improve traction significantly – especially in conjunction with the standard-fit mechanical multi-disc limited-slip differential. This means that the engine power is transferred to the road even more effectively when driving in a particularly dynamic style.
AMG ceramic high-performance composite braking system available as an option
The AMG high-performance braking system with composite brake discs at the front ensures extremely short stopping distances even under enormous loads. From now on, red-painted brake callipers all-round are available on request. The newly developed, optional ceramic composite brakes with even larger brake discs guarantee even better braking performance. The ceramic brake discs perform reliably at even higher operating temperatures thanks to their greater hardness, all combined with an impressive weight reduction of around 40 percent. Reducing the unsprung masses has further improved both comfort and grip, and the reduced rotating masses at the front axle ensure a more direct steering response.
Lightweight construction was also key when it came to the wheels: AMG light‑alloy wheels based on the innovative flow-forming principle reduce the unsprung masses while improving driving dynamics and suspension comfort. In addition to the standard-fit AMG 7-spoke light-alloy wheels, 5-twin-spoke wheels and weight-optimised 10-spoke forged wheels are available as an option. 265/35 R 19 (front) and 295/30 R 20 (rear) tyres developed exclusively for the SLS AMG ensure optimum performance. A tyre pressure monitoring system is fitted as standard to permanently monitor tyre pressure in all four wheels, with an individual display for each tyre.
Production in Sindelfingen, market launch in autumn 2011
The SLS AMG Roadster was designed and developed in parallel with the Coupé under the autonomous aegis of Mercedes-AMG GmbH. The open-top super sports car will be produced at the largest Mercedes-Benz production plant in Sindelfingen. The AMG 6.3-litre V8 engine comes directly from the AMG engine workshop in Affalterbach, where it is hand-assembled according to the traditional “One man, one engine” philosophy.
The Mercedes-Benz SLS AMG Roadster can be ordered from 1 June 2011, and its market launch commences in autumn 2011. The selling price is € 195,160 (incl. 19% VAT).
Most 2012 models are equipped with a more fuel-efficient 7-speed automatic transmission and more powerful direct-injection gasoline engines, including a new turbo four-cylinder, a normally aspirated V6 and bi-turbo V8s – some with ECO Stop/Start technology.
Many 2012 models now feature a new audio headunit with a 5.8-inch color display, Bluetooth audio streaming, phonebook download, album cover art and USB port. COMAND with Navigation receives a 7-inch screen, SIRIUS weather, display of personal photos, 3D city models, intermediate navigation destinations, area avoidance and a larger 10GB Music Register.
C-Class Sedan (September)
C-Class Coupe (September)
CLS-Class Four-Door Coupe (June)
E-Class Coupe and Cabriolet
F-Cell
G-Class SUV (October)
GL-Class SUV (August)
GLK-Class SUV (July)
R-Class Crossover (August)
S-Class Sedan (July)
SL-Class Coupe/Roadster (June)
SLK-Class Coupe/Roadster
SLS AMG
Sprinter Van
The new, third generation of the legendary SLK was long expected and is now available at Mercedes-Benz distributors, precisely at the beginning of the summer.
Obviously, it was a question of honour for the PIECHA Design specialists to develop as one of the first ones an entire styling and tuning programme for the new SLK R172. And thus, they present the “Accurian RS”, a sporty, elegant interpretation of the Stuttgart-based roadster. Piecha gives the new, more defined front of the SLK an Accurian RS front spoiler lip with lateral grids. The lip can be combined with a cover, which turns the grid into a three-part piece and further emphasises the LED daytime running lights on the right and left side. For a quieter airflow around the lateral body of the new SLK, PIECHA Design installed a set of Accurian RS side skirt covers. The covers are bonded easily and positively on the original side skirts. Furthermore, the opposed installed grids provide for a more prominent design. For all R172 models, no matter whether with the side skirts, the AMG or also the Accurian RS sills, PIECHA Design offers per side four LED recessed spotlights each.
The rear end has a considerable sportier appearance thanks to the Accurian RS rear diffuser, which is available in a small and large version. The diffusor, which runs up to the subfloor, not only provides for additional output at the rear axle, but also frames the QUADRO 4-tube mufflers in perfection. In both versions, the serial rear apron has to be slightly reworked. Moreover, a diffusor application is available for the AMG styling rear apron. The Accurian RS aerodynamic programme is completed by a classical rear spoiler lip, which has a simple adhesive fixation. Another world premiere are the PIECHA MP1 monobloc high-tech rims, which perfectly match the modern and sporty, elegant design language of the Accurian RS with its newly interpreted turbine design. In the front in 8.5×19 ET25 with 225/35 R19 and in the back in optional 9.5 or 10.5×19 with 255 or 275/30 R19, the MP1 monobloc wheel provides in connection with 25 mm lowering springs for a perfect wedge shape.
Finally, the Mercedes specialists from Rottweiler offer practical comfort top control, which allows for an opening and closing of the top via the serial key up to a speed of 60 km/h.
All additional information including price and delivery information are available at: www.piecha.com
The neutral auditors from TÜV Süd have acknowledged the high level of environmental compatibility of the new SLK. The sporty Roadster has received an Environmental Certificate in accordance with the ISO 14062 standard, based on a lifecycle assessment of the SLK.
“We have been making rapid advances in efficiency, the likes of which have never been seen before in the history of the automobile. And as the inventors of the automobile, we assume particular responsibility for its future,” explains Professor Herbert Kohler, Chief Environmental Officer of Daimler AG. “We analyse the environmental compatibility of our models throughout their entire life cycle – from production, through their many years of usage, to end-of-life recycling. This goes far beyond mere compliance with legal requirements.”
The Environmental Certificate, together with explanatory material, has been made available to the public in the “Life Cycle” documentation series, which can be accessed at www.mercedes-benz.com. In addition to the SLK, the A, B, C, E and S-Class models, as well as the GLK and SLK have already received environmental certification from TÜV Süd.
Over its entire life cycle – from production and operation over more than 200,000 kilometres up to recovery – the new Mercedes-Benz SLK causes 20 percent lower CO2 emissions than its predecessor at the time of discontinuation in 2010. The overall energy balance is equally positive: over the entire life cycle, the primary energy savings amount to 18 percent compared with the predecessor, which corresponds to the energy content of 4100 litres of petrol.
This is largely due to significant reductions in consumption. In the SLK 200 BlueEFFICIENCY model, for example, consumption has dropped from the preceding figure of 8.0 to 8.2 l/100 km (at the time of discontinuation in 2010) to 6.1 to 6.5 l/100 km, representing a reduction in fuel consumption of up to 24 percent.
The SLK already meets the mandatory recycling rate of 95 percent by weight that will come into force on 1 January 2015; the future requirements of vehicle recycling were already taken into account at the development stage. Closing material loops plays an important role here. The new Roadster makes use of a total of 68 components with a combined weight of 35.4 kg that are produced from high-quality recycled plastics. The mass of approved recycled components has therefore been increased by 5 percent over the previous model.
Some 24 components in the SLK with a total weight of almost 8.2 kg are made from natural materials – an increase of 67 percent compared with the previous model. In terms of natural fibres, the new SLK primarily makes use of leather, cotton and wool as standard. For the tank vent filter too, the new SLK also makes use of raw materials from nature, olive stones are employed in the production of the activated charcoal filter.
After the gullwing version, the open-top variant is the second car to be independently developed by AMG. The Coupé and Roadster concepts were created in parallel – which brought decisive advantages during the development process. During this approx. 3-year period for the SLS AMG Roadster, the engineers devoted particular attention to the aspects of bodyshell rigidity, driving dynamics, the soft top and NVH.
Greater Stuttgart area, spring 2011: the new SLS AMG Roadsters are slightly disguised as they cover their test routes. Easily identified by those in the know, others only see these two-seaters with a fabric soft top as some prototype or other: there are no Mercedes stars or model designations to be seen, just black adhesive foil at the front, rear and along the sides. The proportions speak for themselves, however: a long bonnet, large wheels and a short rear end indicate that this is a sports car of breathtaking design.
There are still several months to go before the world premiere at the International Automobile Show in Frankfurt/Main in September 2011. Enough time to verify the maturity of the new SLS AMG Roadster. The personnel responsible at AMG have already completed most of the work involved, as the Coupé and Roadster were created in parallel. The development and testing of a new AMG high-performance car is based on the digital prototype (DPT). Extensive investigations help to achieve specific objectives. Whether these concern the bodyshell design, weight distribution, engine position, centre of gravity or axle design, or of course the handling dynamics, aerodynamics, ergonomics, crash behaviour and production process – the very latest simulation programmes allow the very realistic representation of a vehicle and all its characteristics. The digital prototype is therefore a complete, virtual automobile.
In the process AMG also uses the extensive know-how of colleagues at Mercedes-Benz: as in the case of the Coupé, networked development with selected Mercedes-Benz development departments at the Mercedes Technology Center (MTC) in Sindelfingen was intensified.
The latest simulation software and extensive test drives on all continents make the 420 kW (571 hp) Roadster fit for its market launch in autumn 2011. The focus of the specialists in Affalterbach was particularly on bodyshell rigidity, handling dynamics, the soft top and NVH (Noise, Vibration and Harshness).
Synthesis: rigidity, performance and a close-fitting soft top
Naturally all these development aspects are closely linked, as Tobias Moers (44), head of overall development and member of the Executive Board at Mercedes-AMG, explains: “Without bodyshell rigidity there are no handling dynamics, and neither can the close fit of the soft top be guaranteed.” As the Roadster variant was already taken into consideration during the conceptual phase for the SLS AMG, the lightweight and extremely rigid aluminium spaceframe was specified at a correspondingly early stage. Owing to the omission of a fixed roof and gullwing doors, it was necessary to design the side sills more robustly. But not primarily to meet the legal requirements in the event of a crash – in principle the Roadster would also manage this with the side sills of the Coupé. Studies and test drives showed that the driving dynamics could be improved even further with this measure, therefore side sills with greater wall thicknesses and chambers were developed for the open-top SLS AMG. Tobias Moers: “The SLS AMG Roadster is a super-sportscar – just like the Coupé. It goes without saying that AMG is also determined to achieve superior driving dynamics with this open-top variant.”
In order to achieve handling dynamics identical to those of the Coupé, despite the lack of a fixed roof, the Roadster has two features designed to increase the rigidity of the bodyshell: the cross-member carrying the dashboard has additional supporting struts at the windscreen frame and at the centre tunnel, and a strut mounting stay between the soft top and the fuel tank makes the rear axle even more rigid. These features prevent unwanted vibrations from the start, and make the use of additional, weight-increasing vibration dampers such as those often employed by competitors unnecessary. As another important aspect, it is only if the bodyshell has the requisite rigidity that the soft top can be safely and reliably opened and closed electrohydraulically while on the move at up to 50 km/h. The side members of the front and rear modules in both SLS AMG models are identical. The bodyshell of the Roadster tips the scales at only 243 kilograms – which is comparable to the low, 241-kilogram weight of the SLS AMG Coupé’s bodyshell.
A few specific modifications to the aluminium spaceframe
Owing to the omission of the coupé roof and gullwing doors, the open-top SLS AMG has a reinforcing cross-member behind the seats which supports the fixed rollover protection system. Not forgetting the 250-watt subwoofer of the Bang&Olufsen BeoSound AMG high-end sound system: This is accommodated in the cross-member, as the Coupé-specific location on the parcel shelf is not available owing to the Roadster’s soft top. One particular challenge was acoustic insulation of the cross-member, which acts as a subwoofer housing for the two 165-millimetre speakers connected in series. Numerous improvements became necessary before the required listening pleasure was achieved. It was only with the help of a special bulkhead within the aluminium cross-member that all audiophile standards could be satisfied.
The three-layered fabric soft top of the SLS AMG Roadster, which is deposited behind the seats in a Z-formation to save space, is also an aspect relevant to handling dynamics. This weight-optimised, combined magnesium/steel/ aluminium construction ensures a low centre of gravity and is designed for speeds up to the maximum of 317 km/h (electronically limited). Whether open or closed, even at top speed there must be no intrusive flapping, booming, hissing, clattering, whistling or howling. Likewise the push-on glass draught-stop and the panelling in the interior, on the soft top and along the beltline must be vibration-free. Nothing must be allowed to compromise the open-air enjoyment. The basis for verified, customer-compatible results in extreme conditions is provided by precisely defined test drives on the high-speed tracks in Papenburg, Nardo (Italy) and Idiada (Spain).
The excellent acoustics – which AMG engineers have naturally also verified with sophisticated measuring technology – also benefit from another special feature, namely the seamless, bonded-in rear window of single-layer safety glass. A special production process not only ensures a smooth transition between the outer skin of the soft top and the glass, as the sum of these design measures also leads to low wind noise when the roof is closed – at any speed.
125 years of experience with innovations in open-top vehicles
Ensuring that the soft top is wind and waterproof is a complex undertaking, and AMG and Mercedes-Benz have used the enormous experience gained during 125 years of innovation. There have always been open-top vehicles in the history of Mercedes-Benz – and unlike in the case of many competitors, in an uninterrupted sequence.
Every soft top is different, however, and even objectives already defined become more ambitious over time. The five challenges to which the AMG developers of the SLS AMG Roadster gave great attention and commitment were water, sand, dust, heat and cold. One special feature of the compact soft top is the continuous water pocket: this is attached below the soft top to catch rainwater and direct it down to the underbody via two apertures on each side.
All the development aspects of a vehicle which involve flexible deformation are always very complex. Simulations can sometimes lead to false conclusions, and do not always provide the most cost-effective solution. Classic test procedures often help to achieve rapid results. Development project manager Holger Strahl (34): “In this field it is not possible to simulate everything with CAD, and it becomes a matter of trying out, driving, testing and improving. The solution finally approved must also be suitable for series production, of course. Our specialist departments and the overall development team work together very closely in their common search for the perfect solution.” He also adds: “There is no such thing as the second-best alternative for AMG.”
Endurance test with 16 criteria: the “Sindelfingen rain test”
The rain test at the Mercedes Technology Center (MTC) in Sindelfingen is particularly demanding, and every new vehicle bearing the Mercedes star is required to pass it – whether it has a fixed roof, a soft top or a vario-roof. Extreme quantities of water are used to ensure that the result of the development work is watertight – which is a particular challenge in the case of roadsters or cabriolets. 16 tests must be successfully absolved before approval is granted.
Whether during the hose test, when all soft top, door and flap seals are sprayed with a water-hose, the continuous, overnight rain test, the fording test, the icing, swirl and high-pressure tests, or the final session in an automatic car wash – the rain test simulates every conceivable situation that can occur on any continent.
Bench testing and practical trials in all climatic zones
In addition to various test facilities such as the water chamber and the climate/ wind tunnel, the AMG specialists have recourse to test drives in all climatic regions of the world, where problems can be identified and solutions sought. In Laredo, Texas, for example, there is a particularly fine dust which finds its way into practically any gap – and tests the seals to the absolute limit.
The compact fabric soft top, which can be conveniently opened and closed in just 11 seconds at the touch of a button, even at speeds up to 50 km/h, must also submit to various tortures. One of these is the standardised soft top endurance test used for all new Mercedes roadsters or Mercedes cabriolets: 20,000 closing cycles on a stationary test rig must present no problem for the hydraulic cylinders, electric motors and joints. There are also 2500 closing cycles while on the move, whether in great heat, icy cold, high humidity or dry desert winds. In this area too, nothing is left to chance – and for excellent reasons: the aim of this enormous effort is to give the customer limitless driving pleasure in their SLS AMG Roadster.
Endurance trial as a final quality check
All the optimisation stages have been absolved, and the production tests at the Mercedes-Benz plant in Sindelfingen have been successful, but the developers have still not reached their goal. The quality of the overall vehicle is now the focus of the accompanying endurance trials. These simulate an entire vehicle life under the toughest conditions in accelerated test cycles. The aim is to verify the level of maturity before production of customer vehicles commences.
The endurance testing at a glance:
Long-term testing on a variety of different roads:
All the components and systems are tested together in everyday operation. Loaded up to their permitted gross vehicle weight, the test cars are put through a precisely defined test programme on country roads, on motorways and in city traffic.
Endurance testing on heathland:
In this case, the developers focus on the durability of the chassis and suspension components, the entire bodyshell and the integral subframe on which the front axle, steering and engine are mounted. The test cars are loaded up to their permitted gross vehicle weight.
“Accelerated” endurance testing:
Testing of the entire vehicle, focussing on the powertrain, chassis and suspension. Special features of the AMG programme include 10,000 kilometres on the Nürburgring’s North Loop and 10,000 kilometres in city traffic.
Full-load endurance testing:
Extreme acceleration and braking manoeuvres with a high proportion of full-load operation, making extreme demands on the cooling, fuel-delivery and braking systems.
Long-term corrosion testing:
Corrosion testing of the entire vehicle simulates the toughest dynamic and climatic environmental influences.
Final board approval:
All-inclusive verification of the degree of development and production maturity.
World premiere on 13 September 2011, at the International Motor Show (IAA) in Frankfurt/Main
This is an extensive and tightly scheduled programme, and for many an AMG engineer it will only begin to lose its immediacy at the world premiere on 13 September 2011, when the new SLS AMG Roadster is presented to a barrage of media attention at the International Motor Show in Frankfurt/Main.
Mercedes-Benz USA announced prices for the next generation SLK roadster and CLS coupe line. Suggested retail pricing for the 2012 SLK350 will start at $54,800, while the 2012 CLS550 will begin at $71,300 and the high-performance CLS63 AMG at $94,900. Prices exclude a $875 destination & delivery charge.
SLK Features Trend-setting Retractable Hardtop
The 2012 Mercedes-Benz SLK coupe/roadster represents the third generation of a two-seat sports car that rocked the automotive world when it unveiled the first automatic retractable hardtop in modern times. With the top up it’s a quiet, weather-tight coupe – push a button, and 20 seconds later the car is topless. Like the retractable hardtop of the larger SL model, the rear window of the SLK pivots to match the curvature of the top as it’s being lowered, providing more trunk room than ever.
The SLK350 is powered by a new 3.5-liter V6 that features direct injection and multi-spark ignition. With even more power and better fuel economy than its predecessor, the new SLK engine generates 302 horsepower and 273 lb.-ft. of torque.
CLS Four-Door Coupe Gets First Major Redesign
The four-passenger 2012 CLS coupe represents the first major redesign of a car that established an entirely new market segment – the four-door coupe, which combines the emotional appeal and dynamic design of a coupe with the comfort and functionality of a sedan. When it hits the U.S. market in the summer of 2011, the 2012 CLS line will offer a choice of two exciting models, both powered by new biturbo, direct-injection V8 engines. The 4.6-liter CLS550 engine produces 402 horsepower and 443 lb-ft. of torque, and the high-performance CLS63 AMG is powered by a 5.5-liter version of the new V8 that’s rated at 518 hp and 516 lb.-ft of torque.
Over the last few months we have been bring you spy photos of the SLS AMG Roadster. We’ve seen it with its top down and testing in the snow but always with heavy camouflage. Today we have the first photos of the AMG Roadster with nearly no camo and we like what we see. The Mercedes-Benz SLS AMG Roadster was spied by World Car Fans while testing on the Nürburgring.
AMG Boss Ola Källenius stated that the Mercedes SLS AMG Roadster will be make its debut at the Frankfurt motor show in September of this year. After its motor show unveiling, the roadster is expected to become available for purchase as a 2012 model shortly after.
The new Mercedes SLS AMG Roadster will be propelled by an AMG 6.3 liter V8 Engine with an output of 420 kW (571 PS / 563 hp) and 650 Nm (479 lb-ft) of torque. The new roadster will top out at 309 km/h (192 mph) and sprint 0-100 km/h in 4.0 seconds.
As always, we will keep you up to date as news and photos come in.
The spies over at World Car Fans managed to grab a few photos of the 2012 Mercedes-Benz SLK63 AMG doing a bit of testing near the Nürburgring. Still heavily camouflaged, clear signs of the massive engine within the SLK AMG are seen. AMG trademarks inclue: twin, oval, double exhaust pipes, an updated aggressive front bumper and high performance disk brakes.
Still unclear to any of us are the exact engine specs. There are currenlty three possible contenders: the first being a rumored 422 hp (315 kW / 428 PS) 5.5-liter V8, a 451 hp (336 kW / 457 PS) 6.2-liter V8, and a detuned 5.5-liter twin-turbo V8 that normally produces 537 hp (400 kW / 544 PS) and 800 Nm (590 lb-ft) of torque.
As we learn more or additional photos come in we will keep you bring them your way.