The Mercedes-Benz 300 b Cabriolet D is a rear wheel drive road car, with the powerplant positioned in the front, and a 4 door convertible/cabriolet bodyshell.
It is part of Mercedes-Benz's W 186 III series of cars.
Its 6 cylinder, single overhead camshaft naturally aspirated engine has 2 valves per cylinder and a volume of 3 litres. This unit musters power and torque figures of 123 bhp (125 PS/92 kW) at 4500 rpm and 221 Nm (163 lbft/22.5 kgm) at 2600 rpm respectively.
The Mercedes-Benz 300 b Cabriolet D weighs a quoted 1820 kg at the kerb.
It is said to be able to manage a top speed of 160 km/h (99 mph).
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater convertible/cabriolet | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3050 mm | 120.1 inches | |
| Track/tread (front) | 1480 mm | 58.3 inches | |
| Track/tread (rear) | 1525 mm | 60 inches | |
| Length | 5055 mm | 199 inches | |
| Width | 1838 mm | 72.4 inches | |
| Height | 1640 mm | 64.6 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.66 | ||
| Kerb weight | 1820 kg | 4012 lb | |
| Weight distribution | |||
| fuel tank capacity | 72 litres | 15.8 [19] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Mercedes-Benz | ||
| Engine code | M 186 II / 186.920 | ||
| Cylinders | Straight 6 | ||
| Capacity | 3 litre 2996 cc (182.827 cu in) |
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| Bore × Stroke | 85 × 88 mm
3.35 × 3.46 in |
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| Bore/stroke ratio | 0.97 | ||
| Valve gear | single overhead camshaft (SOHC)
2 valves per cylinder 12 valves in total |
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| maximum power output | 125 PS (123 bhp) (92 kW) at 4500 rpm |
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| maximum torque | 221 Nm (163 ft·lb) (22.5 kgm) at 2600 rpm |
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| Specific output | 30.6 kW/litre 41.6 ps/litre 41.1 bhp/litre 0.67 bhp/cu in |
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| Specific torque |
73.77 Nm/litre
0.89 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 7.5:1 | ||
| Fuel system | 2 Solex 32 PAIAT carburettors | ||
| bmep (brake mean effective pressure) | 927 kPa (134.4 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 499.33 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 17 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 160 km/h (99 mph) | ||
| Power-to-weight ratio | Higher is better 68.52 PS/tonne (1000 kg) 0.07 PS/kg 50.4 kW/tonne (1000 kg) 0.05 kW/kg 67.58 bhp/tonne (1000 kg) 0.07 bhp/kg 0.03 bhp/lb |
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| Weight-to-power ratio | Lower is better 19.84 kg/kW 33.14 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 | 3.750 | ||
| Turning circle | |||
| Front suspension | I.CS. | ||
| Rear suspension | I.CS. | ||
| Wheel size front | 5K x 15 | ||
| Wheel size rear | 5K x 15 | ||
| Tyres front | 7.00-15 | ||
| Tyres rear | 7.00-15 | ||
| Brakes F/R | Dr/Dr-S | ||
| Front brake diameter | 260 mm | ||
| Rear brake diameter | 260 mm | ||
| Braked area | |||
| Gearbox | |||
| Top gear ratio | 1 | ||
| Final drive ratio | 4.67 | ||
| general | |||
| Carfolio.com ID | 251812 | ||
| Production total | 136 | ||
| Model code | |||
| Model family | W 186 III | ||
| RAC rating | 26.9 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1954 Mercedes-Benz 300 b Cabriolet D added 2011-08-12. Last modified 2020-02-02. |
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