The S 450 4MATIC is a motor car from Mercedes-Benz, with all wheel drive, a front located engine and a 4 door saloon (sedan) body style.
It forms part of Mercedes-Benz's W 221 range of cars.
The 8 cylinder, double overhead camshaft naturally aspirated engine has 4 valves per cylinder and a volume of 4.6 litres. This unit provides power and torque figures of 335 bhp (340 PS/250 kW) at 6000 rpm and 460 Nm (339 lbft/46.9 kgm) at 2700-5000 rpm respectively.
The engine transfers its power through to the wheels via a 7 speed automatic transmission.
Its claimed weight at the kerb is 2030 kg.
Maximum speed claimed is 250 km/h, which is 155 mph, and carbon dioxide emissions are 256.0 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 | 2030 kg | 4475 lb | |
| Weight distribution | |||
| fuel tank capacity | 90 litres | 19.8 [23.8] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Mercedes-Benz | ||
| Engine code | |||
| Cylinders | V 8 | ||
| Capacity | 4.6 litre 4633 cc (282.723 cu in) |
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| Bore × Stroke | 92.6 × 86 mm
3.65 × 3.39 in |
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| Bore/stroke ratio | 1.08 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 32 valves in total |
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| maximum power output | 340 PS (335 bhp) (250 kW) at 6000 rpm |
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| maximum torque | 460 Nm (339 ft·lb) (46.9 kgm) at 2700-5000 rpm |
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| Specific output | 53.9 kW/litre 73.3 ps/litre 72.3 bhp/litre 1.18 bhp/cu in |
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| Specific torque |
99.29 Nm/litre
1.2 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.7:1 | ||
| Fuel system | EFI | ||
| bmep (brake mean effective pressure) | 1247.7 kPa (181 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 579.13 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 5.9 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 167.32 PS/tonne (1000 kg) 0.17 PS/kg 123.06 kW/tonne (1000 kg) 0.12 kW/kg 165.02 bhp/tonne (1000 kg) 0.17 bhp/kg 0.07 bhp/lb |
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| Weight-to-power ratio | Lower is better 8.13 kg/kW 13.57 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Carbon dioxide emissions | 256.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | M | ||
| CO2 Effizienz (DE) | F | ||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | all wheel drive | ||
| Torque split | 45:55 | ||
| Steering | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | I.4Li.ARB. | ||
| Rear suspension | I.MultiLi.ARB. | ||
| Wheel size front | 8½J x 18 ET43 | ||
| Wheel size rear | 8½J x 18 ET43 | ||
| Tyres front | 255/45 R 18 | ||
| Tyres rear | 255/45 R 18 | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 350 mm | ||
| Rear brake diameter | 320 mm | ||
| Braked area | |||
| Gearbox | 7 speed automatic | ||
| Top gear ratio | 0.73 | ||
| Final drive ratio | 2.65 | ||
| general | |||
| Carfolio.com ID | 198561 | ||
| Production total | |||
| Model code | |||
| Model family | W 221 | ||
| RAC rating | 42.5 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2009 Mercedes-Benz S 450 4MATIC added 2009-05-25. Last modified 2013-02-28. |
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