The Mercedes-Benz 300 CD is a rear wheel drive motor vehicle, with the engine placed in the front, and a 2 door coupé bodyshell designed by Friedrich Geiger.
It forms part of Mercedes-Benz's C 123 model series.
It is powered by a naturally aspirated engine of 3 litre capacity. This powerplant features single overhead camshaft valve gear, 5 cylinder layout, and 2 valves per cylinder. It produces 77.3 bhp (78 PS/58 kW) of power at 4400 rpm, and maximum torque of 156 N·m (115 lb·ft/15.9 kgm) at 2400 rpm.
The engine delivers its power through to the wheels via a 4 speed automatic gearbox.
Its quoted kerb weight is 1550 kg.
Maximum speed claimed is 143 km/h or 89 mph.
Full specs
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Applicable to the USA domestic market(s). | ||
| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater fixed-head coupé | ||
| Number of doors | 2 | ||
| Designer | Friedrich Geiger | ||
| dimensions & weights | |||
| Wheelbase | 2710 mm | 106.7 inches | |
| Track/tread (front) | 1488 mm | 58.6 inches | |
| Track/tread (rear) | 1446 mm | 56.9 inches | |
| Length | 4763 mm | 187.5 inches | |
| Width | 1786 mm | 70.3 inches | |
| Height | 1395 mm | 54.9 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.76 | ||
| Kerb weight | 1550 kg | 3417 lb | |
| Weight distribution | |||
| fuel tank capacity | 80 litres | 17.6 [21.1] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated diesel | ||
| Engine manufacturer | Mercedes-Benz | ||
| Engine code | OM 617 D 30 / 617.912 | ||
| Cylinders | Straight 5 | ||
| Capacity | 3 litre 3005 cc (183.376 cu in) |
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| Bore × Stroke | 91 × 92.4 mm
3.58 × 3.64 in |
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| Bore/stroke ratio | 0.98 | ||
| Valve gear | single overhead camshaft (SOHC)
2 valves per cylinder 10 valves in total |
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| maximum power output | 78 PS (77.3 bhp) (58 kW) at 4400 rpm |
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| maximum torque | 156 Nm (115 ft·lb) (15.9 kgm) at 2400 rpm |
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| Specific output | 19.2 kW/litre 26.1 ps/litre 25.7 bhp/litre 0.42 bhp/cu in |
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| Specific torque |
51.91 Nm/litre
0.63 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 21.5:1 | ||
| Fuel system | Bosch mechanical diesel pump | ||
| bmep (brake mean effective pressure) | 652.4 kPa (94.6 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 6 | ||
| Engine coolant | Water | ||
| Unitary capacity | 601 cc | ||
| Aspiration | Normal D. | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 20.8 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 143 km/h (89 mph) | ||
| Power-to-weight ratio | Higher is better 50.56 PS/tonne (1000 kg) 0.05 PS/kg 37.19 kW/tonne (1000 kg) 0.04 kW/kg 49.87 bhp/tonne (1000 kg) 0.05 bhp/kg 0.02 bhp/lb |
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| Weight-to-power ratio | Lower is better 26.89 kg/kW 44.92 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 | |||
| 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 | 3.200 | ||
| Turning circle | |||
| Front suspension | I.DW.CS.ARB. | ||
| Rear suspension | I.STA.CS.ARB. | ||
| Wheel size front | 6J x 14 H 2 | ||
| Wheel size rear | 6J x 14 H 2 | ||
| Tyres front | 195/70 HR 14 89H | ||
| Tyres rear | 195/70 HR 14 89H | ||
| Brakes F/R | Di/Di-S | ||
| Front brake diameter | 278 mm | ||
| Rear brake diameter | 279 mm | ||
| Braked area | |||
| Gearbox | 4 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.46 | ||
| general | |||
| Carfolio.com ID | 188716 | ||
| Production total | |||
| Model code | C 123 D 30 | ||
| Model family | C 123 | ||
| RAC rating | 25.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1977 Mercedes-Benz 300 CD added 2008-09-28. Last modified 2013-06-19. |
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