The 840i Cabriolet is a rear wheel drive convertible/cabriolet road car with a front placed engine, sold by BMW.
The BMW 840i Cabriolet belongs to the G14 model family from BMW.
Its 6 cylinder, double overhead camshaft turbocharged powerplant has 4 valves per cylinder and a volume of 3 litres. For this model it musters power and torque figures of 328 bhp (333 PS/245 kW) at 5500-6250 rpm and 500 Nm (369 lbft/51 kgm) at 1700-4000 rpm respectively.
An 8 speed automatic 'box transfers the power to the driven wheels.
Stated weight at the kerb is 1915 kg.
It is said to be able to achieve a top speed of 250 km/h which is 155 mph, claimed fuel consumption figures are 9.5/5.9/7.2 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 166.0 g/km.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2+2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2822 mm | 111.1 inches | |
| Track/tread (front) | 1627 mm | 64.1 inches | |
| Track/tread (rear) | 1642 mm | 64.6 inches | |
| Length | 4843 mm | 190.7 inches | |
| Width | 1902 mm | 74.9 inches | |
| Height | 1339 mm | 52.7 inches | |
| Ground clearance | 118 mm | 4.6 inches | |
| length:wheelbase ratio | 1.72 | ||
| Kerb weight | 1915 kg | 4222 lb | |
| Weight distribution | |||
| fuel tank capacity | 68 litres | 15 [18] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.29 | ||
| Frontal area | 2.22 m² | ||
| CdA | 0.64 | ||
| Powertrain | |||
| engine type | turbocharged petrol | ||
| Engine manufacturer | BMW | ||
| Engine code | |||
| Cylinders | Straight 6 | ||
| Capacity | 3 litre 2998 cc (182.949 cu in) |
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| Bore × Stroke | 82 × 94.6 mm
3.23 × 3.72 in |
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| Bore/stroke ratio | 0.87 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 24 valves in total |
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| maximum power output | 333 PS (328 bhp) (245 kW) at 5500-6250 rpm |
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| maximum torque | 500 Nm (369 ft·lb) (51 kgm) at 1700-4000 rpm |
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| Specific output | 81.6 kW/litre 110.9 ps/litre 109.4 bhp/litre 1.79 bhp/cu in |
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| Specific torque |
166.78 Nm/litre
2.02 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 11:1 | ||
| Fuel system | direct petrol injection | ||
| bmep (brake mean effective pressure) | 2095.8 kPa (304 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 7 | ||
| Engine coolant | Water | ||
| Unitary capacity | 499.67 cc | ||
| Aspiration | Turbo | ||
| Compressor | BMW TwinPower turbocharger | ||
| Intercooler | |||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 5.5 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 250 km/h (155 mph) | ||
| Power-to-weight ratio | Higher is better 173.66 PS/tonne (1000 kg) 0.17 PS/kg 127.72 kW/tonne (1000 kg) 0.13 kW/kg 171.28 bhp/tonne (1000 kg) 0.17 bhp/kg 0.08 bhp/lb |
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| Weight-to-power ratio | Lower is better 7.83 kg/kW 13.08 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 9.5/5.9/7.2 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 9.5/5.9/7.2 l/100km urban/extra-urban/combined | ||
| km/litre | 10.5/16.9/13.9 km/l urban/extra-urban/combined | ||
| UK MPG | 29.7/47.9/39.2 UK MPG urban/extra-urban/combined | ||
| US MPG | 24.8/39.9/32.7 US MPG urban/extra-urban/combined | ||
| Carbon dioxide emissions | 166.0 g/km NEDC | ||
| 188.00 g/km WLTP | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | H | ||
| CO2 Effizienz (DE) | B | ||
| 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 18 | ||
| Wheel size rear | 9J x 18 | ||
| Tyres front | 245/45 R 18 100Y XL | ||
| Tyres rear | 275/40 R 18 103Y XL | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 8 speed automatic | ||
| Top gear ratio | 0.64 | ||
| Final drive ratio | 2.93 | ||
| general | |||
| Carfolio.com ID | 725648 | ||
| Production total | |||
| Model code | |||
| Model family | G14 | ||
| RAC rating | 25.0 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2021 BMW 840i Cabriolet added 2021-04-15. Last modified 2021-04-15. |
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