The BMW 640d Cabrio is a rear wheel drive road car, with the engine placed in the front, and a 2 door convertible/cabriolet bodyshell.
It forms part of BMW's F12 series of cars.
The power is produced by a turbocharged engine of 3 litre capacity. This powerplant features double overhead camshaft valve gear, 6 cylinder layout, and 4 valves per cylinder. It produces 308.5 bhp (313 PS/230 kW) of power at 4400 rpm, and maximum torque of 630 N·m (465 lb·ft/64.2 kgm) at 1500-2500 rpm.
The engine transfers its power through to the wheels via an 8 speed automatic 'box.
It weighs a stated 1935 kg at the kerb.
Its maximum speed claimed is 250 km/h, which is 155 mph, officially stated fuel consumption figures are 6.6/4.9/5.6 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 147.0 g/km.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2+2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2855 mm | 112.4 inches | |
| Track/tread (front) | 1600 mm | 63 inches | |
| Track/tread (rear) | 1657 mm | 65.2 inches | |
| Length | 4894 mm | 192.7 inches | |
| Width | 1894 mm | 74.6 inches | |
| Height | 1365 mm | 53.7 inches | |
| Ground clearance | 123 mm | 4.8 inches | |
| length:wheelbase ratio | 1.71 | ||
| Kerb weight | 1935 kg | 4266 lb | |
| Weight distribution | |||
| fuel tank capacity | 70 litres | 15.4 [18.5] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.31 | ||
| Frontal area | 2.23 m² | ||
| CdA | 0.69 | ||
| Powertrain | |||
| engine type | turbocharged diesel | ||
| Engine manufacturer | BMW | ||
| Engine code | |||
| Cylinders | Straight 6 | ||
| Capacity | 3 litre 2993 cc (182.644 cu in) |
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| Bore × Stroke | 84 × 90 mm
3.31 × 3.54 in |
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| Bore/stroke ratio | 0.93 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 24 valves in total |
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| maximum power output | 313 PS (308.5 bhp) (230 kW) at 4400 rpm |
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| maximum torque | 630 Nm (465 ft·lb) (64.2 kgm) at 1500-2500 rpm |
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| Specific output | 76.9 kW/litre 104.5 ps/litre 103.1 bhp/litre 1.69 bhp/cu in |
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| Specific torque |
210.49 Nm/litre
2.54 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 16.5:1 | ||
| Fuel system | common rail direct diesel injection | ||
| bmep (brake mean effective pressure) | 2645.1 kPa (383.6 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 498.83 cc | ||
| Aspiration | Turbo D. | ||
| Compressor | |||
| Intercooler | |||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 5.6 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | 25.1 s | ||
| Maximum speed | 250 km/h (155 mph) | ||
| Power-to-weight ratio | Higher is better 161.65 PS/tonne (1000 kg) 0.16 PS/kg 118.89 kW/tonne (1000 kg) 0.12 kW/kg 159.43 bhp/tonne (1000 kg) 0.16 bhp/kg 0.07 bhp/lb |
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| Weight-to-power ratio | Lower is better 8.41 kg/kW 14.05 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 6.6/4.9/5.6 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 6.6/4.9/5.6 l/100km urban/extra-urban/combined | ||
| km/litre | 15.2/20.4/17.9 km/l urban/extra-urban/combined | ||
| UK MPG | 42.8/57.6/50.4 UK MPG urban/extra-urban/combined | ||
| US MPG | 35.6/48.0/42.0 US MPG urban/extra-urban/combined | ||
| Carbon dioxide emissions | 147.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | F | ||
| CO2 Effizienz (DE) | A | ||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | power assisted rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8J x 17 | ||
| Wheel size rear | 8J x 17 | ||
| Tyres front | 225/55 R 17 97Y | ||
| Tyres rear | 225/55 R 17 97Y | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 348 mm | ||
| Rear brake diameter | 345 mm | ||
| Braked area | |||
| Gearbox | 8 speed automatic | ||
| Top gear ratio | 0.67 | ||
| Final drive ratio | 2.81 | ||
| general | |||
| Carfolio.com ID | 249975 | ||
| Production total | |||
| Model code | |||
| Model family | F12 | ||
| RAC rating | 26.2 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2011 BMW 640d Cabrio added 2011-07-06. Last modified 2020-02-02. |
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