Comparison Audi S8 (D5, facelift 2021) 4.0 TFSI V8 (571 Hp) MHEV quattro tiptronic & Mercedes-Benz C-class Coupe (C205, facelift 2018) AMG C 63 S V8 (510 Hp) MCT
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| Brand: | Audi | Mercedes-Benz |
| Model: | S8 | C-class |
| Generation: | S8 (D5, facelift 2021) | C-class Coupe (C205, facelift 2018) |
| Engine / modification: | 4.0 TFSI V8 (571 Hp) MHEV quattro tiptronic | AMG C 63 S V8 (510 Hp) MCT |
| Production start: | 2021 year | 2018 year |
| Production end: | 2021 year | |
| Coupe type: | Sedan | Coupe |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 4 |
| Fuel consumption / economy - urban: | 14.0 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.8 l/100 km | |
| Fuel consumption / economy - combined: | 10.1 l/100 km | |
| Fuel consumption at Low speed (WLTP): | 20.5 l/100 km | 11.1 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel consumption at Medium speed (WLTP): | 12 l/100 km | |
| Fuel consumption at high speed (WLTP): | 9.5 l/100 km | |
| Drag coefficient: | 0.28 | |
| Fuel tank volume: | 82 l | 66 l |
| Fuel consumption at very high speed (WLTP): | 9.5 l/100 km | 11.3 l/100 km |
| Combined fuel consumption (WLTP): | 11.5 l/100 km | |
| Emission standard: | Euro 6d-ISC-FCM | Euro 6d |
| CO2 emissions: | 230 g/km | |
| Power: | 571 hp | 510 hp |
| Max power in: | 6000 rpm. | 5500-6250 rpm. |
| Maximum speed: | 250 , Electronically limited km/h | 290 km/h |
| Acceleration from 0 to 100 km/h: | 3.8 sec | 3.9 sec |
| CO2 emissions (WLTP): | 261 g/km | 251-256 g/km |
| Torque: | 800 Nm @ 2050-4500 rpm. | 700 Nm @ 2000-4500 rpm. |
| Model Engine: | CWWB | M 177.980 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3996 cm3 | 3982 cm3 |
| Engine oil capacity: | 9.5 l | 9.0 l |
| Coolant: | 16.3 l | 11.1 l |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | BiTurbo | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.1 | |
| Piston Stroke: | 86 mm | |
| Cylinder Bore: | 86 mm | |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 tiptronic | 9 MCT AMG SPEEDSHIFT |
| Length: | 5190 mm | 4751 mm |
| Width: | 1945 mm | 1877 mm |
| Width including mirrors: | 2130 mm | |
| Height: | 1475 mm | 1401 mm |
| Wheelbase: | 2998 mm | 2840 mm |
| Front track: | 1629 mm | 1636 mm |
| Rear (Back) track: | 1614 mm | |
| Ride height(clearance): | 101 mm | |
| Approach angle: | 11 ° | 11.7 ° |
| Departure angle: | 14 ° | 12.5 ° |
| Ramp angle: | 9.1 ° | |
| Front overhang: | 1007 mm | 855 mm |
| Rear overhang: | 1185 mm | 1056 mm |
| Minimum volume of Luggage (trunk): | 505 l | 355 l |
| Front suspension: | Independent multi-link | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2835 kg | 2160 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2220 kg | 1745 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 90 kg | |
| Permitted trailer load with brakes (8%): | 2300 kg | |
| Minimum turning circle (turning diameter): | 11.4 m | |
| Permitted trailer load with brakes (12%): | 2300 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 95 kg | |
| Tire size: | 265/40 R20 | 255/35 R19|285/30 R19 |
| Wheel rims size: | 9J x 20 | 9J x 19|10.5J x 19 |