Comparison BMW M8 Convertible Competition 4.4 V8 (625 Hp) xDrive Steptronic & Porsche 911 (996, facelift 2001) Turbo 3.6 (420 Hp)
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| Brand: | BMW | Porsche |
| Model: | M8 | 911 |
| Generation: | M8 Convertible | 911 (996, facelift 2001) |
| Engine / modification: | Competition 4.4 V8 (625 Hp) xDrive Steptronic | Turbo 3.6 (420 Hp) |
| Production start: | 2019 year | 2000 year |
| Production end: | 2005 year | |
| Coupe type: | Cabriolet | Coupe |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 4 | 2+2 |
| Fuel consumption / economy - urban: | 15.1-15.2 l/100 km | 18.8 l/100 km |
| Fuel consumption / economy - extra urban: | 7.9-8.3 l/100 km | 9.2 l/100 km |
| Fuel consumption / economy - combined: | 10.6-10.8 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 68 l | 64 l |
| Emission standard: | Euro 6 d-TEMP | |
| CO2 emissions: | 241-246 g/km | |
| Power: | 625 hp | 420 hp |
| Max power in: | 6000 rpm. | 6000 rpm. |
| Maximum speed: | 250 km/h | 303 km/h |
| Acceleration from 0 to 100 km/h: | 3.3 sec | 4.2 sec |
| Acceleration from 0 to 200 km/h: | 11.1 sec | |
| Torque: | 750 Nm @ 1800-5800 rpm. | 560 Nm @ 2700 rpm. |
| Engine position: | Front, longitudinal | Rear, longitudinal |
| Engine displacement: | 4395 cm3 | 3600 cm3 |
| Engine oil capacity: | 10.0 l | 8 l |
| Coolant: | 28.5 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | Turbocharging |
| Position of cylinders: | V engine | Boxer |
| Valvetrain: | - | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | 9.4 |
| Piston Stroke: | 88.3 mm | 76.4 mm |
| Cylinder Bore: | 89 mm | 100 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 M Steptronic | 5 |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4867 mm | 4465 mm |
| Width: | 1907 mm | 1830 mm |
| Width including mirrors: | 2137 mm | |
| Height: | 1353 mm | 1295 mm |
| Wheelbase: | 2827 mm | 2350 mm |
| Front track: | 1627 mm | 1465 mm |
| Rear (Back) track: | 1632 mm | 1522 mm |
| Front overhang: | 950 mm | |
| Rear overhang: | 1090 mm | |
| Minimum volume of Luggage (trunk): | 100 l | |
| Maximum amount of Luggage (trunk): | 350 l | 100 l |
| Front suspension: | Double wishbone | Independent type McPherson |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2440 kg | 1885 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2010 kg | 1540 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 12.2 m | |
| Tire size: | Front wheel tires: 275/35 ZR20 102Y XL | 225/40 R18; 295/30 R18 |
| Wheel rims size: | Front wheel rims: 9.5J x 20 | 8J x 18; 11J x 18 |