Comparison BMW 6 Series Convertible (F12) 640d (313 Hp) xDrive Steptronic & Mercedes-Benz SLS AMG Coupe (C197) Black Series 6.2 V8 (631 Hp) DCT
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| Brand: | BMW | Mercedes-Benz |
| Model: | 6 Series | SLS AMG |
| Generation: | 6 Series Convertible (F12) | SLS AMG Coupe (C197) |
| Engine / modification: | 640d (313 Hp) xDrive Steptronic | Black Series 6.2 V8 (631 Hp) DCT |
| Production start: | 2012 year | 2013 year |
| Production end: | 2015 year | 2013 year |
| Coupe type: | Cabriolet | Coupe |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 4 | 2 |
| Fuel consumption / economy - urban: | 7.1-7.3 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.1-5.2 l/100 km | |
| Fuel consumption / economy - combined: | 5.9-6.0 l/100 km | 13.7 l/100 km |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | 0.38 |
| Fuel tank volume: | 70 l | 85 l |
| Emission standard: | Euro 6 | Euro 5 |
| CO2 emissions: | 154-158 g/km | 321 g/km |
| Power: | 313 hp | 631 hp |
| Max power in: | 4400 rpm. | 7400 rpm. |
| Maximum speed: | 250 km/h | 315 km/h |
| Acceleration from 0 to 100 km/h: | 5.4 sec | 3.6 sec |
| Torque: | 630 Nm @ 1500-2500 rpm. | 635 Nm @ 5500 rpm. |
| Model Engine: | N57D30 | M 159.980 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2993 cm3 | 6208 cm3 |
| Engine oil capacity: | 6.5 l | 9.5 l |
| Coolant: | 8.0 l | 14 l |
| Fuel System: | Diesel Commonrail | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 16.5 | 11.3 |
| Piston Stroke: | 90 mm | 94.6 mm |
| Cylinder Bore: | 84 mm | 102.2 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 7 DCT |
| Length: | 4894 mm | 4638 mm |
| Width: | 1894 mm | 1965 mm |
| Width including mirrors: | 2078 mm | |
| Height: | 1365 mm | 1260 mm |
| Wheelbase: | 2855 mm | 2680 mm |
| Front track: | 1600 mm | 1702 mm |
| Rear (Back) track: | 1665 mm | 1677 mm |
| Ride height(clearance): | 123 mm | |
| Minimum volume of Luggage (trunk): | 300 l | 176 l |
| Maximum amount of Luggage (trunk): | 350 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2440 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1930 kg | 1550 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.7 m | |
| Tire size: | 225/55 R17; 245/45 R18; 275/45 R18; 245/40 R19; 275/35 R19; 245/35 R20; 275/30 R20 | 275/35 ZR19; 325/30 ZR20 |
| Wheel rims size: | 8J x 17; 8J x 18; 9J x 18; 8.5J x 19; 9J x 19; 8.5J x 20; 9J x 20 | R19; R20 |