Comparison BMW M8 Coupe (F92, facelift 2022) Competition 4.4 V8 (625 Hp) xDrive Steptronic Sport & Mercedes-Benz R-class (W251) AMG 63 V8 (510 Hp) 4MATIC 7G-TRONIC AMG SPEEDSHIFT
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| Brand: | BMW | Mercedes-Benz |
| Model: | M8 | R-class |
| Generation: | M8 Coupe (F92, facelift 2022) | R-class (W251) |
| Engine / modification: | Competition 4.4 V8 (625 Hp) xDrive Steptronic Sport | AMG 63 V8 (510 Hp) 4MATIC 7G-TRONIC AMG SPEEDSHIFT |
| Production start: | 2022 year | 2006 year |
| Production end: | 2007 year | |
| Coupe type: | Coupe | |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 4 | 6 |
| Fuel consumption / economy - urban: | 24.1 l/100 km | |
| Fuel consumption / economy - extra urban: | 11.8 l/100 km | |
| Fuel consumption / economy - combined: | 16.3 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | |
| Fuel tank volume: | 68 l | 80 l |
| Combined fuel consumption (WLTP): | 11-11.4 l/100 km | |
| Emission standard: | Euro 6d | |
| Power: | 625 hp | 510 hp |
| Max power in: | 6000 rpm. | 6800 rpm. |
| Maximum speed: | 250 , Electronically limited km/h | 250 , Electronically limited km/h |
| Acceleration from 0 to 100 km/h: | 3.2 sec | 5 sec |
| CO2 emissions (WLTP): | 251-260 g/km | |
| Torque: | 750 Nm @ 1800-5860 rpm. | 630 Nm @ 5200 rpm. |
| Model Engine: | S63B44B | M 156 E 62 / 156.980 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4395 cm3 | 6208 cm3 |
| Engine oil capacity: | 10 l | 9.6 l |
| Coolant: | 7.5 l | |
| Fuel System: | Direct injection | |
| Aspiration / Turbine: | BiTurbo | |
| Position of cylinders: | V engine | |
| Valvetrain: | DOHC | |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | 11.3 |
| Piston Stroke: | 88.3 mm | 94.6 mm |
| Cylinder Bore: | 89 mm | 102.2 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 Steptronic Sport | 7G-TRONIC |
| Length: | 4867 mm | 4930 mm |
| Width: | 1907 mm | 1922 mm |
| Width including mirrors: | 2137 mm | |
| Height: | 1362 mm | 1634 mm |
| Wheelbase: | 2827 mm | 2980 mm |
| Front track: | 1627 mm | 1665 mm |
| Rear (Back) track: | 1632 mm | 1652 mm |
| Front overhang: | 950 mm | |
| Rear overhang: | 1090 mm | |
| Minimum volume of Luggage (trunk): | 420 l | 433 l |
| Maximum amount of Luggage (trunk): | 2407 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2385 kg | 2900 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 1900 kg | 2330 kg |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | Hydraulic Steering |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 12.2 m | 12.4 m |
| Permitted trailer load with brakes (12%): | 2100 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Tire size: | 275/35 ZR20; 285/35 ZR20 | Front wheel tires: 265/45 R20 |
| Wheel rims size: | 9.5J x 20; 10.5J x 20 | Front wheel rims: 8.5J x 20 |