The S 250 CDI BlueEFFICIENCY is a rear wheel drive saloon (sedan) automobile with a front mounted engine, manufactured by Mercedes-Benz.
It forms part of Mercedes-Benz's W 221 series of cars.
Its 2.1 litre engine is a turbocharged, double overhead camshaft, 4 cylinder unit that develops 201 bhp (204 PS/150 kW) of power at 4200 rpm, and maximum torque of 500 N·m (369 lb·ft/51 kgm) at 1600-1800 rpm.
The engine delivers its power through to the wheels by means of a 7 speed automatic gearbox.
The stated weight at the kerb is 1970 kg.
Top stated speed is 240 km/h, or 149 mph, manufacturer claimed fuel consumption is 7.0/5.0/5.7 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 149.0 g/km.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3035 mm | 119.5 inches | |
| Track/tread (front) | 1600 mm | 63 inches | |
| Track/tread (rear) | 1606 mm | 63.2 inches | |
| Length | 5096 mm | 200.6 inches | |
| Width | 1871 mm | 73.7 inches | |
| Height | 1479 mm | 58.2 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.68 | ||
| Kerb weight | 1970 kg | 4343 lb | |
| Weight distribution | |||
| fuel tank capacity | 83 litres | 18.3 [21.9] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.26 | ||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | turbocharged diesel | ||
| Engine manufacturer | Mercedes-Benz | ||
| Engine code | |||
| Cylinders | Straight 4 | ||
| Capacity | 2.1 litre 2143 cc (130.774 cu in) |
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| Bore × Stroke | 83 × 99 mm
3.27 × 3.9 in |
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| Bore/stroke ratio | 0.84 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 16 valves in total |
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| maximum power output | 204 PS (201 bhp) (150 kW) at 4200 rpm |
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| maximum torque | 500 Nm (369 ft·lb) (51 kgm) at 1600-1800 rpm |
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| Specific output | 69.9 kW/litre 95.1 ps/litre 93.8 bhp/litre 1.54 bhp/cu in |
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| Specific torque |
233.32 Nm/litre
2.82 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 16.2:1 | ||
| Fuel system | common rail direct diesel injection | ||
| bmep (brake mean effective pressure) | 2932 kPa (425.2 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 535.75 cc | ||
| Aspiration | Turbo D. | ||
| Compressor | |||
| Intercooler | |||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 8.2 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 240 km/h (149 mph) | ||
| Power-to-weight ratio | Higher is better 103.45 PS/tonne (1000 kg) 0.1 PS/kg 76.08 kW/tonne (1000 kg) 0.08 kW/kg 102.03 bhp/tonne (1000 kg) 0.1 bhp/kg 0.05 bhp/lb |
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| Weight-to-power ratio | Lower is better 13.14 kg/kW 21.95 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 7.0/5.0/5.7 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 7.0/5.0/5.7 l/100km urban/extra-urban/combined | ||
| km/litre | 14.3/20.0/17.5 km/l urban/extra-urban/combined | ||
| UK MPG | 40.4/56.5/49.6 UK MPG urban/extra-urban/combined | ||
| US MPG | 33.6/47.0/41.3 US MPG urban/extra-urban/combined | ||
| Carbon dioxide emissions | 149.0 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 | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8J x 17 ET 43 | ||
| Wheel size rear | 8J x 17 ET 43 | ||
| Tyres front | 235/55 R 17 | ||
| Tyres rear | 235/55 R 17 | ||
| Brakes F/R | VeDi/Di-S-ABS | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 7 speed automatic | ||
| Top gear ratio | 0.73 | ||
| Final drive ratio | 2.82 | ||
| general | |||
| Carfolio.com ID | 219494 | ||
| Production total | |||
| Model code | |||
| Model family | W 221 | ||
| RAC rating | 17.1 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2010 Mercedes-Benz S 250 CDI BlueEFFICIENCY added 2010-09-23. Last modified 2013-02-28. |
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