A Look back at the Mercedes-Benz SL R107

Fifty years ago, in April 1971, Mercedes-Benz initiated a new chapter in the fascinating history of the SL sports car

Fifty years ago, in April 1971, Mercedes-Benz initiated a new chapter in the fascinating history of the SL sports car: the 350 SL was the brand’s first SL with a V8 engine and the first model in the R 107 model series to bear the “R” abbreviation for “roadster” for the first time. The completely new development, as an open two-seater with a fully retractable fabric top and removable hardtop, was a self-confident, sporty but luxurious vehicle and combined both performance and ride comfort perfectly. In the same year, Mercedes-Benz derived the four-seater luxury class coupés of the C 107 model series from the R 107 model series.

With the exception of the G-Class, no other Mercedes-Benz has been produced for longer

The R 107 is a worthy addition to the ranks of the SL family alongside the 300 SL racing sports car (W 194) from 1952, the 300 SL standard-production sports cars (W 198, as a coupé from 1954 to 1957 and as a roadster from 1957 to 1963), the 190 SL (W 121, 1955 to 1963) and the “Pagoda” SL of the W 113 model series (1963 to 1971). In 2021, the brand with the star is continuing its tradition of SL sports cars by launching the Mercedes-AMG SL in model series R 232.

Mercedes-Benz 350 SL (R 107, production period 1971 to 1989). Exterior photo from an elevated position with the doors open. (Photo signature in the Mercedes-Benz Classic archive: 1998DIG135)

Mercedes-Benz 350 SL (R 107, production period 1971 to 1989). Exterior photo from an elevated position with the doors open. (Photo signature in the Mercedes-Benz Classic archive: 1998DIG135)d

A model for success with 18 years of series production

The R 107 was produced from 1971 to 1989, during which time it was kept up to date with regular facelifts and new engines. With the exception of the G-Class, no other Mercedes-Benz has been produced for longer. Technically speaking, the Mercedes-Benz 350 SL launched 50 years ago had little to do with its direct predecessor, the W 113 “Pagoda” SL. Instead, the designers forged much closer links to the brand’s current passenger car range of the time: the front and rear suspension systems, for example, were based on the “Stroke/8” models of the upper medium-size category. The 147 kW (200 hp) V8 engine with a displacement of 3,499 cc was a carry-over from the premium-class Mercedes-Benz 280 SE 3.5 of the W 111 model series (coupé and cabriolet) and the W 108/109 model series (saloon).

The technical innovations found in the open sports car included the enhanced safety body development with an independent frame-floor unit made of sheets of different thicknesses to provide defined crumple behaviour, the fuel tank installed above the rear axle to protect it in the event of a collision, high-strength steels in the A-pillars and windscreen frame with its glued-in glass, as well as the interior with a new four-spoke safety steering wheel, padded surfaces and deformable elements as a contribution to passive safety. From March 1980, this SL was fitted with the ABS anti-lock brake system and, from January 1982, with a driver’s airbag and belt tensioners as a supplementary restraint system – these items were available as optional extras.

Wide variety of engine options

Following the debut of the 350 SL, Mercedes-Benz continued to expand the range of this model series. In 1973, the 165 kW (225 hp) 450 SL, also with an eight-cylinder engine, that had initially been reserved for export to North America from autumn 1971, appeared on the European markets. In 1974, the six-cylinder 280 SL (136 kW/185 hp) version followed. For the first time in the history of the SL, this meant that a model series was now available with a choice of three different engines.

As a result of the 1980 facelift, the 380 SL (160 kW/218 hp) replaced the 350 SL, and the 500 SL (177 kW/240 hp) took over the position as the top model in place of the 450 SL. As part of the extensive overhaul, the interior of the sports cars, among other things, was adapted to match the S-Class Saloons of the 126 model series. In addition, the engineers upgraded numerous technical items, such as the transmission. Externally, the facelift was restricted to a few discreet improvements, among other things involving new bonnets made of light alloy and a front spoiler. The 500 SL was also fitted with the light-alloy boot lid with a black plastic rear spoiler from the SLC Coupé with the 5-litre V8 engine.

In 1985, Mercedes-Benz once again presented a completely revised model range for the R 107 model series. Besides slight changes to the exterior with 15-inch wheels and a uniform front spoiler for all the models as well as improved front suspension with zero scrub radius, the main focus was on an updated choice of engines. A highlight for all the fans of the sports cars with the star was the 300 SL with a 3-litre six-cylinder engine – because this 138 kW (188 hp) sports car revived the model designation with which the SL story had begun in March 1952. The 420 SL (160 kW/218 hp) was a completely new addition, while the 500 SL (180 kW/245 hp) was given a redesigned engine with an electronic ignition system and the Bosch KE-Jetronic electronically controlled mechanical fuel injection system. The top model of the R 107 series was the 560 SL with a spectacular 5.6-litre V8 engine, which, however, was reserved for export to North America, Japan and Australia. All the models were now offered with a closed-loop three-way catalytic converter.

Production of model series R 107 ended in August 1989, after more than 18 years. Over that period, the Sindelfingen plant had produced a total of 237,287 cars. Today, these open two-seaters are sought-after classics: the combination of luxury and sportiness still fascinates enthusiasts to this day.

Final Winter Development Drive for the Mercedes-AMG SL

Mercedes-AMG engineers do their test driving on a special, closed-off proving ground in snowy Sweden

“Dear Editor!

The new MERCEDES-BENZ “300 SL” (super-light) sports car model will be undertaking road trials in public for the first time this week. We are therefore delighted to enclose the technical data for this vehicle, together with a photo.”

Entwicklungsfahrzeuge des neuen Mercedes-AMG SL (Baureihe 232) bei der abschließenden Wintererprobung in Schweden.
Development vehicles of the new Mercedes-AMG SL (Model 232) at the final winter test in Sweden.

These lines, sent to the media on 12 March 1952 from the company then known as Daimler-Benz AG, announced nothing less than a global sensation: the first public appearance of the new racing sports car, the 300 SL.

Some 69 years later, the now eighth generation of the SL is about to enter the home straight of its development. While the public road trials with the Mercedes-Benz SL 300 racing sports car still took place on the A81 Autobahn, today’s Mercedes-AMG engineers do their test driving on a special, closed-off proving ground in snowy Sweden.

And even though a large proportion of the development work on the Roadster, configured as a 2+2-seater, took place in digital form, a certain amount of analogue development driving is still essential. The final tuning of the fully variable all-wheel drive system 4MATIC+, for instance, which is now offered for the first time in the SL as well, is thus being undertaken in wintry regions. The redesigned fabric roof, too, has to prove itself in the harsh conditions that prevail near the Arctic Circle. The handling dynamics of this iconic Roadster, which is set to make its debut later this year, will shortly be undergoing final refinement – on the north loop of the Nürburgring, amongst other places. On the most challenging racing circuit in the world, the specialists from Mercedes-AMG will be ensuring that this latest interpretation of the SL draws even more than ever on its sporting roots.

Meanwhile the legendary Roadster, the different variants of which will in future all be available exclusively under the Mercedes-AMG name, also remains true to virtues other than its long history: with its unique design, and its exceptional levels of quality and luxury, this new interpretation of the icon continues the success story that began in 1952 in terms of exclusiveness, too.

2012 Schloss Dyck Classic Days Welcome Mercedes-Benz

On exhibit will be a Mercedes-Benz 300 SLR, a Mercedes 500 SL Rallye, a Mercedes 500 K as well as a Mercedes-Benz C 111

Mercedes-Benz Classic will be on hand with its finest collection of classic vehicles at this year’s Schloss Dyck Classic Days from August 3 to 5, 2012. On exhibit will be a Mercedes-Benz 300 SLR, a Mercedes-Benz 500 SL Rallye, a Mercedes-Benz 500 K as well as a Mercedes-Benz C 111. In addition, a 300 SL racing car from 1952 and an SL 63 AMG Safety Car from 2008 will provide some excitement on the track. In addition, the Mercedes-Benz Düsseldorf plant will exhibit classic light-duty commercial vehicles on the occasion of its 50th anniversary. And as always visitors to the festival will have the opportunity to meet famous Mercedes-Benz racing drivers from various motor sport eras on site.

This will be already the seventh edition of the Schloss Dyck Classic Days. For the first time the event will last three whole days. As far back as 60 years ago, the Mercedes-Benz 300 SL racing car (W 194) laid the foundation for the successful motor sport activities of the Stuttgart-based brand after Second World War. Classic racing cars still exude a very special fascination today when their historic engines are started and they subsequently begin to drive. Racing driver legend Hans Herrmann will climb behind the wheel of a Mercedes-Benz 300 SL (W 194) from 1952 to drive some demonstration laps on the track outside the Dyck Castle gates. On all three days Dieter Glemser will pilot the pace car of the individual special races, the original Mercedes-Benz SL 63 AMG Safety Car (R 230) that saw action during the 2008/2009 Formula 1 season.

Sir Stirling Moss will travel to the Rhineland this year as a guest of honour of the festival organiser and will also be available to Mercedes-Benz Classic on all three days. The former Silver Arrow pilot can expect his own paddock with a selection of his legendary winning cars. The racing driver legend will fulfill requests for autographs in the paddock – in the immediate vicinity of his winning Mille Miglia car, the Mercedes-Benz 300 SLR from 1955 with the famous starting number 722.

A special feature at this year’s Classic Days Schloss Dyck will be the light-duty commercial vehicles from the Mercedes-Benz Düsseldorf plant, which celebrates its golden jubilee. Since April 1952, some 3.5 million vans sporting the Mercedes star have been produced there. This includes a number of model series such as the L/O 319, L 406 D/L 408/O 309, T1, T2, and Sprinter that have shaped and enriched the daily lives of many. These days the Düsseldorf plant produces the latest Sprinter NCV3 model as a panel van and as a crew bus.

The program of the Classic Days, to which enthusiasts and collectors travel from all over Europe, focuses on several themes. “Racing Legends” presents track races for historic competition vehicles up to model year 1961. Solo and sidecar motorcycles manufactured in 1940 and before also race against the clock on the 2.8-kilometre track near the moated castle.

Sports and racing cars will start in the categories “Classic” (1910 through 1925), “Historic” (1926 through 1949) and “Modern” (1950 through 1961). There will also be the special races “Milestones of the Compressor Era” for supercharged racing cars manufactured between 1920 and 1960, “Formula Monoposto” for one-seater Formula racing cars which date from the years between 1930 and 1965 as well as “Historic Grand Prix Cars” for Grand Prix cars built between 1920 and 1965.

“Jewels in the Park” is the name of the second dazzling highlight of the festival at Schloss Dyck. The exclusive vehicle presentation is once again rated as a top event in category A by the FIVA (Fédération Internationale des Véhicules Anciens), the worldwide association for historic vehicles – on par with the Villa d’Este and Pebble Beach Concours d’Elegance. Just 40 rare vehicles qualify for the contest on the meadows directly next to the castle.

Various special exhibitions and themed presentations will round out the program of events at the Schloss Dyck Classic Days. One such special item on the agenda will be the presentation of classic vehicles on the Miscanthus Field – named after the decorative Chinese reed grass which grows there. For two days it will be transformed into a one-of-a-kind vast open-air museum presenting the cultural history of the automobile with many hundreds of vehicles on show. Another reason behind the strong presence of the Stuttgart-based brand is the close relationship with the official Mercedes-Benz marque clubs: Some 400 members and their vehicles from all over Europe are expected to attend.


The vehicles from Mercedes-Benz Classic at the Schloss Dyck Classic Days 2012

Mercedes-Benz 500 K “Barn Find”, 1934

Mercedes-Benz entered the market segment of the international luxury class in the 1930s with its eight-cylinder supercharged car. The “Typ 500 mit Kompressor”, or 500 K (model series W 29) for short, emerges in 1934 in eight different body styles: as a streamlined saloon with the melodic name “Motorway Courier Car”, as a 4-door saloon, back then still referred to as a “Sedan”, as a cabriolet in three variants, as a 2-door open touring car, and as a roadster. The ultimate variant was the particularly elegant and luxurious Special Roadster, only 29 of which were ever built. The 500 K and its successor, the 540 K, acquired legendary status not only on account of their superlative power and performance, but also by virtue of their beguilingly attractive and high-quality bodies. With its tailor-made form and elegant flowing lines, the “Sindelfingen Body” rose to benchmark status in the 1930s.

Mercedes-Benz 300 SL racing car (W 194), 1952

In 1952, Mercedes-Benz got involved in international motor sport again with the 300 SL racing car of the W 194 series. The basis of the vehicle was an extremely lightweight yet highly rigid tubular frame, clad in an elegantly curved light-alloy body made from aluminium-magnesium sheet metal. Because for reasons of rigidity the tubular frame builds comparatively high on the sides, the W 194 could not be fitted with conventional doors; thus the racing car ended up with its iconic gullwing doors that attach to the roof. This detail was adopted in 1954 by the production sports car 300 SL (W 198) and quickly earned it the moniker “Gullwing” in the English-speaking world.

The W 194 was powered by the six-cylinder in-line M 194 engine that was rated at 170 hp (125 kW) and had a cubic capacity of 2,996 cc. The 300 SL was presented in March 1952 and had its racing debut in the Mille Miglia in May 1952. Among the greatest achievements of the W 194 in its first and only racing season was the triple victory in the Grand Prix of Bern, the spectacular double victories in the 24-hour race at Le Mans and in the 3rd Carrera Panamericana in Mexico as well as the win in the ” Great Jubilee Prize at the Nürburgring “.

Mercedes-Benz 300 SLR (W 196 S), 1955

Mercedes-Benz won the 1955 World Sports Car Championship with the 300 SLR. This sports car was effectively a W 196 Formula 1 racing car equipped with a two-seater sports car body and a three-litre, eight-cylinder in-line engine made of light alloy in place of the 2.5-litre Formula 1 engine with its steel cylinders.

Developing 310 hp (221 kW), the 300 SLR was far superior to its competitors of 1955, as reflected by its one-two wins in the Mille Miglia, the Eifel race at the Nürburgring, the Swedish Grand Prix and the Targa Florio. The 1955 Mille Miglia was won by Stirling Moss assisted by navigator Denis Jenkinson (starting number 722) at an unsurpassed average speed of 157.65 km/h; the “prayer book” proved invaluable in achieving this victory: These pace notes, an innovation at the time, allowed Jenkinson to direct the driver Moss across Italy very effectively. Juan Manuel Fangio (starting number 658) came in second driving solo.

Mercedes-Benz 500 SL Rallye (R 107), 1981

As part of the rally activities in 1979 and 1980 with the SLC Coupés of model series 107 Mercedes-Benz also seriously contemplated using the shorter and more agile roadster. For the 1981 season four vehicles were prepared. Walter Röhrl, the top driver at the time, was hired for rally racing. Röhrl conducted extensive test drives with a Mercedes-Benz 500 SL that was equivalent to this vehicle.

For rally racing the vehicle was fitted with a shorter final-drive ratio, designed for fast acceleration at a correspondingly lower top speed. To transfer the 320 hp (235 kW) of the performance-tuned V8 engine to the road, the driven axle was fitted with a limited-slip differential with a locking rate of 80 per cent, resulting in spectacular – and in the hands of a master – at the same time safe drift angles. A special distinguishing feature of the M 117 engine was its reliability and longevity.

Also impressive was the weight reduction from 1586 to 1350 kilograms, obligatory for motor sport use. And that despite added features such an aluminium roll cage, auxiliary headlamps and all the other rally equipment. Also noteworthy was the parking brake operated by an upright lever that facilitated “setting the approach angle” of the vehicle before bends. However, the vehicle never saw any action because Mercedes-Benz ceased its rally activities before the start of the season.

Mercedes-Benz C 111, 1969

At the Frankfurt International Motor Show (IAA) in September 1969, Mercedes-Benz presented an unusual car: the C 111. The world queued up to see this “test lab on wheels” with its wedge-shaped body and upward-opening gullwing doors. The colour, an orange metallic, originally designated “rosé wine”, also helped to rivet attention. Less conspicuous, but no less unusual, were the technical innovations. The body consisted of fibreglass-reinforced plastic and was riveted and bonded to the steel-frame floor system.

The C 111 served to test the rotary engine. A three-rotor unit developing 280 hp (206 kW) provided the power and permitted a top speed of 260 km/h – quite remarkable for the time. Just a few months later a thoroughly revised version of the C 111 was shown at the Geneva Motor Show. It featured a four-rotor Wankel engine with an output of 350 hp (257 kW). The car accelerated from rest to 100 km/h in 4.8 seconds and reached a top speed of 300 km/h.

Little more was heard about the Wankel engine; diesel technology now became the focus of research. And record-breaking versions of the C 111 again captured public interest: in June 1976, April 1978, and May 1979 the C 111 completed runs on the high-speed test track in Nardo in southern Italy, which produced several absolute world records over various distances.

Mercedes-Benz SL 63 AMG Safety Car (R 230), 2008

Since 1996 Mercedes-Benz has provided the Official F1™ Safety Cars for the races of the Formula 1 world championship. The SL 63 AMG (model series R 230) provided the basis for the 2008 season. The vehicle was developed by the AMG Performance Studio and was powered by a 6.2-litre V8 engine developing 525 hp (386 kW). The Official F1™ Safety Car is always called upon when accidents, bad weather or other dangerous situations jeopardise a safe race. Fast lap times are a must for the Safety Car because otherwise the engines of the Formula 1 cars would overheat while at the same time their tyres and brakes would cool off too much. Numerous modifications to the production vehicle are required to deliver the kind of performance demanded on the racetrack.

One important aspect of this Mercedes-Benz SL 63 AMG was strategic lightweight design. Bonnet, front and rear fascia, front fenders and the boot lid are all manufactured from extremely lightweight yet strong carbon-fibre composites (CFC). Since the Safety Car is always driven with the roof closed, the Vario roof and its mechanical and hydraulic systems were eliminated as well. The Safety Car pilots also must do without insulation materials for noise control and heat reduction. The results: despite the additional weight for auxiliary equipment, such as for example the custom roof-mounted signal light bar, the extensive communications system, larger and additional coolers for engine and transmission oil, coolant and power steering, the Safety Car with full fuel and without occupants weighs 220 kilograms less than a comparable SL 63 AMG production car.

The drivers for Mercedes-Benz Classic at the Schloss Dyck Classic Days 2012

Dieter Glemser, Born in Kirchheim/Teck on 28 June 1938

Dieter Glemser’s career in the fast lane began with the Schorndorf Hill Climb race in 1960. Many class victories followed in various mountain and circuit races on the Nürburgring.

Glemser began racing for Daimler-Benz AG in 1963, winning overall in a Mercedes 220 SE at the Poland Rally and taking second place in both the Germany Rally (including a class win) and the Grand Prix of Argentina. In the following year Glemser was also part of the triple victory of the Böhringer/Kaiser, Glemser/Braungart, and Rosqvist/Falk teams at the Grand Prix of Argentina.

Glemser celebrated victory once again in 1971 with a European Champion title for Ford in the touring car championships and a win at the 24-hour Spa-Francorchamps event. He also held the title of German Motor Sport Champion in 1973 and 1974. However, following a severe accident caused by tyre damage at the touring car race in Macau, Southeast China in November 1974, he ended his active motor sport career.

In 1990, Dieter Glemser became a member of the Mercedes-Benz Motor sport team. His tenure lasted for ten years and as department manager Glemser was responsible for all organisational aspects of the Mercedes-Benz Motor sport team. Between 2001 and 2008 he worked on a freelance basis for Mercedes-AMG and Daimler AG for sport and driver safety training as well as at Classic events. He continues to drive at Mercedes-Benz Classic events to this day.

Hans Herrmann, Born in Stuttgart on 23 February 1928

After his motor sport debut Mercedes-Benz racing manager Alfred Neubauer brought 25-year-old Hans Herrmann to the works team of Daimler-Benz AG at the start of the 1954 season. Herrmann finished in third place in the Swiss Grand Prix on 22 August 1954. Driving three W 196 Streamline racing cars, the Mercedes drivers finished the Avus race on 19 September 1954 with a triple victory in the order Karl Kling, Juan Manuel Fangio, Hans Herrmann.

During the 1955 racing season, Herrmann started a total of eight sports car races and ten Formula 1 races. In the Monaco Grand Prix he sat in for Kling and suffered serious injuries in an accident. Despite a full recovery he did not race for Mercedes-Benz again because the company withdrew from motor sport in October 1955. This marked the end of Herrmann’s engagement for Mercedes-Benz.

In the following years he returned to racing car and sports car competitions. After racing in Formula 2 and Formula 1 he retired from racing in 1970 with a victory in the 24-hour race of Le Mans driving a Porsche. Herrmann continues to start for Mercedes-Benz in events with historical character to the present day.

Did you know?

Mercedes-Benz Classic will be at the Goodwood Revival (14 to 16 September 2012) with five original Silver Arrows of the 1930s – and will compete in a demonstration run with racing cars of Auto Union. It will be the biggest assembly of Silver Arrows since decades.