Comparison BMW 6 Series (E63, facelift 2007) 650i (367 Hp) Automatic & Mercedes-Benz B-class (W247) B 250 (224 Hp) DCT & BMW 6 Series Convertible (F12) 640d (313 Hp) xDrive Steptronic
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| Brand: | BMW | Mercedes-Benz | BMW |
| Model: | 6 Series | B-class | 6 Series |
| Generation: | 6 Series (E63, facelift 2007) | B-class (W247) | 6 Series Convertible (F12) |
| Engine / modification: | 650i (367 Hp) Automatic | B 250 (224 Hp) DCT | 640d (313 Hp) xDrive Steptronic |
| Production start: | 2007 year | 2019 year | 2012 year |
| Production end: | 2010 year | 2015 year | |
| Coupe type: | Coupe | Hatchback | Cabriolet |
| Num. of Doors: | 2 | 5 | 2 |
| Num. of seats: | 2+2 | 5 | 4 |
| Fuel consumption / economy - urban: | 15.9 l/100 km | 8.1-8.3 l/100 km | 7.1-7.3 l/100 km |
| Fuel consumption / economy - extra urban: | 7.4 l/100 km | 5.2-5.4 l/100 km | 5.1-5.2 l/100 km |
| Fuel consumption / economy - combined: | 10.5 l/100 km | 6.3-6.4 l/100 km | 5.9-6.0 l/100 km |
| Fuel consumption at Low speed (WLTP): | 6.8 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.30 | 0.31 | |
| Fuel tank volume: | 70 l | 43 l | 70 l |
| Fuel consumption at very high speed (WLTP): | 7.8 l/100 km | ||
| Emission standard: | Euro 4 | Euro 6d - TEMP | Euro 6 |
| CO2 emissions: | 249 g/km | 143-147 g/km | 154-158 g/km |
| Power: | 367 hp | 224 hp | 313 hp |
| Max power in: | 6300 rpm. | 4400 rpm. | |
| Maximum speed: | 250 km/h | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 5.2 sec | 6.4 sec | 5.4 sec |
| CO2 emissions (WLTP): | 155-177 g/km | ||
| Torque: | 490 Nm @ 3400 rpm. | 350 Nm @ 1800 rpm. | 630 Nm @ 1500-2500 rpm. |
| Model Engine: | N62B48 | M 260.920 | N57D30 |
| Engine position: | Front, longitudinal | Front, transverse | Front, longitudinal |
| Engine displacement: | 4799 cm3 | 1991 cm3 | 2993 cm3 |
| Engine oil capacity: | 8.0 l | 5.5 l | 6.5 l |
| Coolant: | 14.2 l | 10 l | 8.0 l |
| Fuel System: | Multi-point injection | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Turbocharger | Twin-power turbo | |
| Position of cylinders: | V engine | Inline | Inline |
| Number of cylinders: | 8 | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 10.5 | 16.5 | |
| Piston Stroke: | 88.3 mm | 90 mm | |
| Cylinder Bore: | 93 mm | 84 mm | |
| Wheel Drive: | Rear wheel drive | Front wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 6 | 7 DCT | 8 Steptronic |
| Length: | 4820 mm | 4419 mm | 4894 mm |
| Width: | 1855 mm | 1796 mm | 1894 mm |
| Height: | 1374 mm | 1562 mm | 1365 mm |
| Wheelbase: | 2780 mm | 2729 mm | 2855 mm |
| Front track: | 1558 mm | 1567 mm | 1600 mm |
| Rear (Back) track: | 1596 mm | 1665 mm | |
| Ride height(clearance): | 123 mm | ||
| Approach angle: | 13.4 ° | ||
| Departure angle: | 17.2 ° | ||
| Front overhang: | 914 mm | ||
| Rear overhang: | 776 mm | ||
| Minimum volume of Luggage (trunk): | 450 l | 445 l | 300 l |
| Maximum amount of Luggage (trunk): | 1540 l | 350 l | |
| Front suspension: | Double wishbone | Double wishbone | |
| Rear suspension: | Multi-link independent | Multi-link independent | |
| Max weight: | 2100 kg | 2040 kg | 2440 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc | Ventilated discs |
| Kerb Weight: | 1650 kg | 1420 kg | 1930 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | Electric Steering |
| Minimum turning circle (turning diameter): | 11.4 m | 11.7 m | |
| Permitted trailer load with brakes (12%): | 1600 kg | ||
| Permitted trailer load without brakes: | 745 kg | ||
| Tire size: | 245/45 R18 96W RSC | 225/55 R17; 245/45 R18; 275/45 R18; 245/40 R19; 275/35 R19; 245/35 R20; 275/30 R20 | |
| Wheel rims size: | 8J x 18 | 8J x 17; 8J x 18; 9J x 18; 8.5J x 19; 9J x 19; 8.5J x 20; 9J x 20 |