The new Mercedes-AMG GT S Roadster
In time for the spring, Mercedes-AMG is extending its sports car portfolio with the new AMG GT S Roadster
by Chris Danielson | 14 May 2018
In time for the spring, Mercedes-AMG is extending its sports car portfolio with the new AMG GT S Roadster (combined fuel consumption: 11.5 l/100 km; combined CO2 emissions: 262 g/km)1as an attractive open-air model. With this latest addition the AMG GT family now has a dozen members: four two-door Coupés, three Roadsters, two customer sports racing cars and three four-door Coupés. The basis for the high Driving Performance of the new AMG GT S Roadster is the combination of a lightweight aluminium spaceframe, a V8 biturbo engine, a seven-speed dual clutch transmission, a rear axle locking differential and a sport suspension with aluminium double wishbone axles.
“With the AMG GT S Roadster, our AMG GT family has gained another exceptionally sporty member that combines high driving dynamics with an emotional open-air experience,” says Tobias Moers, Chairman of Mercedes-AMG GmbH. “The new model represents the perfect alternative for the performance-oriented AMG GT Roadster customer.”
Compared to the AMG GT Roadster, the AMG GT S Roadster is rendered even more dynamic by numerous modifications to the engine, suspension, brakes, design and interior. This positions it between the AMG GT Roadster and the even more powerful AMG GT C Roadster, now providing a choice of three open-top two-seaters.
Muscular power unit for a top speed of over 300 km/h
The AMG 4.0-litre V8 biturbo in the AMG GT S Roadster delivers an output of 384 kW (522 hp) and maximum torque of 670 Nm. This is available over a wide engine speed range from 1900 to 5000 rpm. The eight-cylinder power unit delivers muscular performance in all engine speed ranges, combined with high efficiency for low fuel consumption and emission levels. A sprint from standstill to 100 km/h is absolved in 3.8 seconds. The dynamic power delivery continues right up to the top speed of 308 km/h.
The two turbochargers of the V8 are not positioned on the outside of the cylinder banks, but inside the cylinder “V”. Advantages: a compact engine design, spontaneous response of the turbochargers and low exhaust emissions thanks to optimal airflow to the near-engine catalysts. The dry sump lubrication also ensures the oil supply even with high lateral forces and allows the engine to be installed lower, thus moving the centre of gravity closer to the road and forming the basis for high lateral acceleration.
Power transfer is based on the combination of a front mid-engine and the AMG SPEEDSHIFT DCT 7G sport transmission in a transaxle arrangement, combined with a torsionally rigid torque tube. Thanks to the wide gear ratio spread, the decidedly high torque of the V8 biturbo engine can be used to optimum effect. The weight distribution is also ideal for optimum driving dynamics at 47 (front) and 53 (rear) percent.
The AMG GT Roadsters at a glance
|AMG GT Roadster||AMG GT S Roadster||AMG GT C Roadster|
|Engine||4-litre V8 with twin turbocharging|
|Output||350 kW (476 hp) at 6000 rpm||384 kW (522 hp) at 6250 rpm||410 kW (557 hp) at 5750-6750 rpm|
|Peak torque||630 Nm at 1700-5000 rpm||670 Nm at 1900-5000 rpm||680 Nm at 1900-5500 rpm|
|Fuel consumption urban/extra-urban/ combined||15.5/9.1/11.5-11.4 l/100 km||15.6/9.1/11.5 l/100 km||15.0/11.0/12.5 l/100 km|
|Combined CO2 emissions||261 g/km||262||284 g/km|
|Emission class||Euro 6d-TEMP|
|Weight (DIN/EC)||1595 kg*/1670 kg**||1625 kg*/1700 kg**||1660 kg*/1735 kg**|
|Acceleration 0-100 km/h||4.0 s||3.8 s||3.7 s|
|Top speed||302 km/h||308 km/h||316 km/h|
|Transmission||AMG SPEEDSHIFT DCT 7G|
|Suspension||AMG sports suspension||AMG RIDE CONTROL sports suspension with Adaptive Damping System||AMG RIDE CONTROL sports suspension with Adaptive Damping System|
|Rear-axle limited-slip differential||Mechanical||Electronically controlled||Electronically controlled|
|Rear axle steering||No||No||Yes|
|AIRPANEL||standard equipment||standard equipment||standard equipment|
|Exhaust system||Sports exhaust system||Performance exhaust system, variable||Performance exhaust system, variable|
|Upholsteries||ARTICO/fabric||ARTICO/ DINAMICA||Nappa leather|
|Performance steering wheel||Nappa leather||Nappa leather/DINAMICA||Nappa leather/DINAMICA|
|Interior trim||AMG Interior Silver Chrome package||AMG Interior Silver Chrome package||AMG Interior Silver Chrome package|
|Wheels – front / rear||9.0 J x 19 / 11.0 J x 19||9.0 J x 19 / 11.0 J x 20||9.0 J x 19 / 12.0 J x 20|
|Tyres – front / rear||255/35 R 19 / 295/35 R 19||265/35 R 19 / 295/30 R 20||265/35 R1 9 / 305/30 R 20|
|Brake disks – front / rear||Composite 360 mm/ integral 360 mm||Composite 390 mm/ composite 360 mm||Composite 390 mm/ composite 360 mm|
|Drive modes||Four: C, S, S+, I||Five: C, S, S+, I, RACE||Five: C, S, S+, I, RACE|
* Kerb weight according to DIN, not including driver; ** Kerb weight according to EC, including driver (75 kg)