1972 BMW Turbo Prototype E25

The BMW Turbo Prototype is a rear wheel drive car, with its engine located amidships, and a 2 door coupé body designed by Paul Bracq. The BMW Turbo Prototype is one of the E25 model family from BMW. Power is produced by a single overhead camshaft, 2 litre turbocharged 4 cylinder engine, with 2 valves per cylinder that produces power and torque figures of 276 bhp (280 PS/206 kW) and 238 N·m (176 lb·ft/24.3 kgm) respectively. The power is supplied to the wheels via a 4 speed manual gearbox. Its stated weight at the kerb is 980 kg. Maximum stated speed is 250 km/h (155 mph).

Pictures

BMW Turbo Prototype -
BMW Turbo Prototype
Image courtesy of BMW

Key facts

1972 BMW Turbo Prototype E25 information summary

What body style?
2 door fixed-head coupé with 2 seats
How long?
4155 mm
How heavy?
980 kg
What size engine?
2 litre, 1991 cm3
How many cylinders?
4, Straight
How much power?
280 PS / 276 bhp / 206 kW
How much torque?
238 Nm / 176 ft.lb / 24.3 kgm
How quick?
0-100 km/h: 6.6 s
How fast?
250 km/h, 155 mph

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1972 BMW Turbo Prototype data
bodywork
Body type2 seater fixed-head coupé
Number of doors2
DesignerPaul Bracq
dimensions & weights
mminches
Wheelbase 2400 mm 94.5 inches
Track/tread (front) 1550 mm 61 inches
Track/tread (rear) 1530 mm 60.2 inches
Length 4155 mm 163.6 inches
Width 1880 mm 74 inches
Height 1100 mm 43.3 inches
Ground clearance
length:wheelbase ratio 1.73
Kerb weight 980 kg 2161 lb
Weight distribution
fuel tank capacity
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type turbocharged petrol
Engine manufacturer BMW
Engine code
Cylinders Straight 4
Capacity 2 litre
1991 cc
(121.498 cu in)
Bore × Stroke 89 × 80 mm
3.5 × 3.15 in
Bore/stroke ratio 1.11
Valve gear single overhead camshaft (SOHC)
2 valves per cylinder
8 valves in total
maximum power output 280 PS (276 bhp) (206 kW)
Specific output 138.6 bhp/litre
2.27 bhp/cu in
maximum torque 238 Nm (176 ft·lb) (24.3 kgm)
Specific torque 119.54 Nm/litre
1.44 ft·lb/cu3
Engine construction
sump wet sumped
compression ratio 6.8:1
Fuel system Kugelfischer fuel injection
bmep (brake mean effective pressure) 1502.2 kPa (217.9 psi)
Maximum RPM
crankshaft bearings
Engine coolant Water
Unitary capacity 497.75 cc
Aspiration Turbo
Compressor
Intercooler N
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h 6.6 s
Acceleration 0-160km/h (100mph) 15.70 s
Standing quarter-mile
Standing kilometre
Maximum speed 250 km/h (155 mph)
Power-to-weight ratio 285.55 PS/tonne (1000 kg)
210.01 kW/tonne (1000 kg)
281.63 bhp/tonne (1000 kg)
0.13 bhp/lb
Weight-to-power ratio 4.76 kg/kW
7.95 lb/bhp
fuel consumption
Fuel consumption
universal 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 mid
Engine layout transverse
Drive wheels rear wheel drive  
Torque split N/A
Steering rack & pinion
turns lock-to-lock
Turning circle
Front suspension I.MS.TB.
Rear suspension
Wheel size front 9½J x 14
Wheel size rear 9½J x 14
Tyres front
Tyres rear
Brakes F/R
Front brake diameter
Rear brake diameter
Braked area
Gearbox 4 speed manual
Top gear ratio
Final drive ratio
general
Carfolio.com ID96294
Production total 2
Model code
Model family E25
RAC rating 19.6
Insurance classification No information available
Tax band No information available
1972 BMW Turbo Prototype added 2002-06-26.
Last modified 2017-07-30.