Comparison BMW 6 Series Gran Turismo (G32 LCI, facelift 2020) 630i (258 Hp) MHEV Steptronic & BMW 6 Series Convertible (F12) 640i (320 Hp) Steptronic
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| Brand: | BMW | BMW |
| Model: | 6 Series | 6 Series |
| Generation: | 6 Series Gran Turismo (G32 LCI, facelift 2020) | 6 Series Convertible (F12) |
| Engine / modification: | 630i (258 Hp) MHEV Steptronic | 640i (320 Hp) Steptronic |
| Production start: | 2020 year | 2011 year |
| Production end: | 2015 year | |
| Coupe type: | Cabriolet | |
| Num. of Doors: | 5 | 2 |
| Num. of seats: | 5 | 4 |
| Fuel consumption / economy - urban: | 7.2-7.4 l/100 km | 10.9 l/100 km |
| Fuel consumption / economy - extra urban: | 5.2-5.4 l/100 km | 6.2 l/100 km |
| Fuel consumption / economy - combined: | 5.9-6.1 l/100 km | 7.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.25 | 0.31 |
| Fuel tank volume: | 68 l | 70 l |
| Emission standard: | EURO 6d | Euro 5 |
| CO2 emissions: | 135-139 g/km | 185 g/km |
| Power: | 258 hp | 320 hp |
| Max power in: | 5000-6500 rpm. | 5800-6000 rpm. |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 6.5 sec | 5.7 sec |
| Torque: | 400 Nm @ 1550-4400 rpm. | 450 Nm @ 1300-4500 rpm. |
| Model Engine: | N55B30 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1998 cm3 | 2979 cm3 |
| Engine oil capacity: | 5.25 l | 6.5 l |
| Coolant: | 10.2 l | |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | Twin-power turbo |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | VALVETRONIC | |
| Number of cylinders: | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.2 | 10.2 |
| Piston Stroke: | 94.6 mm | 89.6 mm |
| Cylinder Bore: | 82 mm | 84 mm |
| Electric motor power: | 11 | |
| Battery capacity: | 0.528 kWh | |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 8 Steptronic |
| Length: | 5091 mm | 4894 mm |
| Width: | 1902 mm | 1894 mm |
| Height: | 1538 mm | 1365 mm |
| Wheelbase: | 3070 mm | 2855 mm |
| Front track: | 1615 mm | 1600 mm |
| Rear (Back) track: | 1649 mm | 1665 mm |
| Ride height(clearance): | 138 mm | 123 mm |
| Minimum volume of Luggage (trunk): | 600 l | 300 l |
| Maximum amount of Luggage (trunk): | 1800 l | 350 l |
| Front suspension: | Double wishbone | Double wishbone |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2450 kg | 2290 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1785 kg | 1840 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 12.3 m | 11.7 m |
| Permitted trailer load with brakes (12%): | 2100 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 100 kg | |
| Tire size: | 225/60 R17 99Y | 225/55 R17 97Y |
| Wheel rims size: | 7.5J x 17 | 8J x 17 |