The Mercedes-Benz 250 is a rear wheel drive motor vehicle, with its engine positioned in the front, and a 4 door saloon (sedan) body designed by Friedrich Geiger.
It forms part of Mercedes-Benz's W 123 family of cars.
The 6 cylinder, single overhead camshaft naturally aspirated engine has 2 valves per cylinder and a displacement of 2.5 litres. In this application it develops power and torque figures of 127 bhp (129 PS/95 kW) at 5500 rpm and 196 Nm (145 lbft/20 kgm) at 3500 rpm respectively.
The engine supplies its power through to the wheels via a 4 speed automatic gearbox.
It is claimed to achieve a maxiumum speed of 175 km/h (109 mph).
Full specs
|
|
|||
| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | Friedrich Geiger | ||
| dimensions & weights | |||
| Wheelbase | 2795 mm | 110 inches | |
| Track/tread (front) | 1488 mm | 58.6 inches | |
| Track/tread (rear) | 1446 mm | 56.9 inches | |
| Length | 4725 mm | 186 inches | |
| Width | 1786 mm | 70.3 inches | |
| Height | 1438 mm | 56.6 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.69 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 65 litres | 14.3 [17.2] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Mercedes-Benz | ||
| Engine code | M 123 V 25/123.920 | ||
| Cylinders | Straight 6 | ||
| Capacity | 2.5 litre 2525 cc (154.085 cu in) |
||
| Bore × Stroke | 86 × 72.45 mm
3.39 × 2.85 in |
||
| Bore/stroke ratio | 1.19 | ||
| Valve gear | single overhead camshaft (SOHC)
2 valves per cylinder 12 valves in total |
||
| maximum power output (DIN) |
129 PS (127 bhp) (95 kW) at 5500 rpm |
||
| maximum torque (DIN) |
196 Nm (145 ft·lb) (20 kgm) at 3500 rpm |
||
| Specific output (DIN) |
37.5 kW/litre 51 ps/litre 50.3 bhp/litre 0.82 bhp/cu in |
||
| Specific torque (DIN) |
77.62 Nm/litre
0.94 ft·lb/cu3 |
||
| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 8.7:1 | ||
| Fuel system | 1 Solex 4 A 1 carburettor | ||
| bmep (brake mean effective pressure) | 975.4 kPa (141.5 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 4 | ||
| Engine coolant | Water | ||
| Unitary capacity | 420.83 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 12.4 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 175 km/h (109 mph) | ||
| Power-to-weight ratio | |||
| Weight-to-power ratio | |||
| 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 | 4.300 | ||
| Turning circle | |||
| Front suspension | I.DW.CS.ARB. | ||
| Rear suspension | I.STA.CS.ARB. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 175 SR 14 | ||
| Tyres rear | 175 SR 14 | ||
| Brakes F/R | Di/Di-S | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 4 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.69 | ||
| general | |||
| Carfolio.com ID | 339559 | ||
| Production total | |||
| Model code | |||
| Model family | W 123 | ||
| RAC rating | 27.5 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
|
1978 Mercedes-Benz 250 Automatic added 2013-06-18. Last modified 2020-02-02. |
|||
