Key facts

1947 Austin A125 information summary

What body style?
sedan/saloon with 4/5 seats
How long?
4877 mm
How heavy?
2000 kg
What size engine?
4 litre, 3990 cm3
How many cylinders?
6, Straight
How much power?
127 PS / 125 bhp / 93 kW
How much torque?
How fast?
132 km/h, 82 mph


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Austin logo

British Leyland (Austin-Morris) Limited

1947 Austin A125 technical specifications


The Austin A125 is a saloon (sedan) with 4 doors and a front mounted powerplant which delivers its power to the rear wheels.
The power is produced by a naturally aspirated engine of 4 litre capacity. This unit features overhead valve valve gear, 6 cylinder layout, and 2 valves per cylinder. It develops 125 bhp (127 PS/93 kW) of power.
The engine transmits power to the wheels through a 4 speed manual set of gears.
The Austin A125 weighs a stated 2000 kg at the kerb.
The Austin A125 is said to be able to attain a maxiumum speed of 132 km/h which is 82 mph.
1947 Austin A125 data
1947 Austin A125 data
Body type4/5 seater sedan/saloon
Number of doors4
dimensions & weights
Wheelbase 3030 119.3
Track/tread (front)
Track/tread (rear)
Length 4877 192
Width 1854 73
Ground clearance
length:wheelbase ratio 1.61
Kerb weight 2000 kg 4409 lb
Weight distribution
fuel tank capacity
Drag coefficient
Frontal area
engine type naturally aspirated petrol
Engine manufacturer Austin
Engine code
Cylinders Straight 6
Capacity 4 litre
3990 cc
(243.485 cu in)
Bore × Stroke 87.3 × 111.1 mm
3.44 × 4.37 in
Bore/stroke ratio 0.79
overhead valve (OHV)
2 valves per cylinder
12 valves in total
maximum power output 127 PS (125 bhp) (93 kW)
Specific output 31.3 bhp/litre
0.51 bhp/cu in
maximum torque
Specific torque
Engine construction
compression ratio 6.8:1
Fuel system 1 St carb
bmep (brake mean effective pressure)
Maximum RPM
crankshaft bearings
Engine coolant Water
Unitary capacity 665 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
Acceleration 0-80km/h (50mph) 12.4 s
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph) -1.00 s
Standing quarter-mile 21.9 s
Standing kilometre
Maximum speed 132 km/h (82 mph)
Power-to-weight ratio 63.37 PS/g
46.61 kW/g
62.5 bhp/ton
0.03 bhp/lb
Weight-to-power ratio 21.46 kg/kW
35.84 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres per 100km
km per litre
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
turns lock-to-lock
Turning circle
Front suspension I.CS.
Rear suspension LA.SE.
Wheel size front
Wheel size rear
Tyres front
Tyres rear
Brakes F/R
Front brake diameter
Rear brake diameter
Gearbox 4 speed manual
Top gear ratio 1
Final drive ratio 4.55
general ID51029
Production total
Model code
Model family
RAC rating 28.4
Insurance classification No information available
Tax band No information available
1947 Austin A125 added before December 1995.
Last modified 2013-02-28.

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1947 Austin A125

World Car Specifications