Comparison BMW 6 Series Convertible (E64) 645 Ci (333 Hp) & BMW 7 Series (G11) 730d (265 Hp) Steptronic
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| Brand: | BMW | BMW |
| Model: | 6 Series | 7 Series |
| Generation: | 6 Series Convertible (E64) | 7 Series (G11) |
| Engine / modification: | 645 Ci (333 Hp) | 730d (265 Hp) Steptronic |
| Production start: | 2003 year | 2015 year |
| Production end: | 2005 year | 2019 year |
| Coupe type: | Cabriolet | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2+2 | 5 |
| Fuel consumption / economy - urban: | 18.5 l/100 km | 5.3-5.8 l/100 km |
| Fuel consumption / economy - extra urban: | 9.6 l/100 km | 4.0-4.4 l/100 km |
| Fuel consumption / economy - combined: | 12.9 l/100 km | 4.5-4.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.32 | 0.24 |
| Fuel tank volume: | 70 l | 78 l |
| Emission standard: | Euro 4 | EURO VI |
| CO2 emissions: | 119-129 g/km | |
| Power: | 333 hp | 265 hp |
| Max power in: | 6100 rpm. | 4000 rpm. |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 6.1 sec | 6.1 sec |
| Torque: | 450 Nm @ 3600 rpm. | 620 Nm @ 2000-2500 rpm. |
| Model Engine: | N62B44 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4398 cm3 | 2993 cm3 |
| Engine oil capacity: | 8 l | 6.5 l |
| Coolant: | 14.2 l | |
| Fuel System: | Multi-point injection | Diesel Commonrail |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | V engine | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | 16.5 |
| Piston Stroke: | 82.7 mm | 90 mm |
| Cylinder Bore: | 92 mm | 84 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4820 mm | 5098 mm |
| Width: | 1855 mm | 1902 mm |
| Height: | 1373 mm | 1478 mm |
| Wheelbase: | 2780 mm | 3070 mm |
| Front track: | 1558 mm | 1618 mm |
| Rear (Back) track: | 1592 mm | 1646 mm |
| Ride height(clearance): | 135 mm | |
| Minimum volume of Luggage (trunk): | 300 l | 515 l |
| Maximum amount of Luggage (trunk): | 350 l | |
| Front suspension: | Coil spring | Double wishbone |
| Rear suspension: | Helical spring | Multi-link independent |
| Max weight: | 2215 kg | 2450 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs |
| Kerb Weight: | 1815 kg | 1755 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 11.4 m | 12.3 m |
| Permitted trailer load with brakes (12%): | 2100 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 100 kg | |
| Tire size: | 245/45 R18 | 225/60 R17 99Y;245/50 R18; 245/45 R19; 275/40 R19; 245/40 R20; 275/35 R20; 245/35 R21; 275/30 R21 |
| Wheel rims size: | 8J x 18 | 7.5J x 17; 8J x 18; 8.5J x 19; 9.5J x 19; 8.5J x 20; 10J x 20; 8.5J x 21; 10J x 21 |