The Mercedes-Benz S 420 Coupé is a coupé with 2 doors and a front mounted engine which supplies the power to the rear wheels.
It is part of Mercedes-Benz's C 140 family of cars.
The Mercedes-Benz S 420 Coupé's engine is a naturally aspirated petrol, 4.2 litre, double overhead camshaft 90 degree V 8 cylinder with 4 valves per cylinder. This powerplant produces 275 bhp (279 PS/205 kW) of power at 5700 rpm, and maximum torque of 400 N·m (295 lb·ft/40.8 kgm) at 3900 rpm.
The engine delivers its power through to the wheels by means of a 4 speed automatic transmission.
The stated kerb weight is 2080 kg.
Its maximum speed claimed is 250 km/h, which is 155 mph, officially stated fuel consumption figures are 9.6/11.5/16.5 l/100km 90 km/h / 120 km/h / urban per 80/1268/EEC.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater fixed-head coupé | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2945 mm | 115.9 inches | |
| Track/tread (front) | 1614 mm | 63.5 inches | |
| Track/tread (rear) | 1587 mm | 62.5 inches | |
| Length | 5065 mm | 199.4 inches | |
| Width | 1912 mm | 75.3 inches | |
| Height | 1452 mm | 57.2 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.72 | ||
| Kerb weight | 2080 kg | 4586 lb | |
| Weight distribution | |||
| fuel tank capacity | 100 litres | 22 [26.4] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Mercedes-Benz | ||
| Engine code | M 119 E 42 / 119.971 | ||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 4.2 litre 4196 cc (256.056 cu in) |
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| Bore × Stroke | 92 × 78.9 mm
3.62 × 3.11 in |
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| Bore/stroke ratio | 1.17 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 32 valves in total |
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| maximum power output | 279 PS (275 bhp) (205 kW) at 5700 rpm |
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| maximum torque | 400 Nm (295 ft·lb) (40.8 kgm) at 3900 rpm |
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| Specific output | 48.9 kW/litre 66.4 ps/litre 65.5 bhp/litre 1.07 bhp/cu in |
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| Specific torque |
95.33 Nm/litre
1.15 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 11:1 | ||
| Fuel system | Bosch LH-Jetronic fuel injection | ||
| bmep (brake mean effective pressure) | 1197.9 kPa (173.7 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 524.5 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 8.3 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 134.05 PS/tonne (1000 kg) 0.13 PS/kg 98.59 kW/tonne (1000 kg) 0.1 kW/kg 132.21 bhp/tonne (1000 kg) 0.13 bhp/kg 0.06 bhp/lb |
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| Weight-to-power ratio | Lower is better 10.14 kg/kW 16.94 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 9.6/11.5/16.5 l/100km 90 km/h / 120 km/h / urban per 80/1268/EEC | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 9.6/11.5/16.5 l/100km 90kmph/120kmph/urban | ||
| km/litre | 10.4/8.7/6.1 km/l 90kmph/120kmph/urban | ||
| UK MPG | 29.4/24.6/17.1 UK MPG 90kmph/120kmph/urban | ||
| US MPG | 24.5/20.5/14.3 US MPG 90kmph/120kmph/urban | ||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | |||
| turns lock-to-lock | 2.960 | ||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8½J x 18 H2 | ||
| Wheel size rear | 8½J x 18 H2 | ||
| Tyres front | 255/45 ZR 18 | ||
| Tyres rear | 255/45 ZR 18 | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 320 mm | ||
| Rear brake diameter | 300 mm | ||
| Braked area | |||
| Gearbox | 4 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 2.82 | ||
| general | |||
| Carfolio.com ID | 607706 | ||
| Production total | |||
| Model code | C 140 E 42 | ||
| Model family | C 140 | ||
| RAC rating | 42.0 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1994 Mercedes-Benz S 420 Coupé added 2019-09-24. Last modified 2020-03-16. |
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