1921 Fiat 520 Superfiat

The Fiat 520 Superfiat is a rear wheel drive motor vehicle, with the engine placed in the front, and a 4 door tourer body. The Fiat 520 Superfiat's engine is a naturally aspirated petrol, 6.8 litre, 12 cylinder with 2 valves per cylinder. In this application it has an output of 80 bhp (81 PS/60 kW) of power at 2000 rpm. A 3 speed manual transmission delivers the power to the driven wheels. The claimed weight at the kerb is 2300 kg. Its maximum speed claimed is 121 km/h (75 mph).


Fiat 520 Superfiat -
Fiat 520 Superfiat
Image courtesy of Fiat

Key facts

1921 Fiat 520 Superfiat information summary

What body style?
4 door tourer with 4/5 seats
How long?
5235 mm
How heavy?
2300 kg
What size engine?
6.8 litre, 6805 cm3
How many cylinders?
12, V
How much power?
81 PS / 80 bhp / 60 kW @ 2000 rpm
How much torque?
How fast?
121 km/h, 75 mph

Similar models

4 door tourer FR 6379 cm3 81 PS 80 bhp 60 kW 1928 kg
tourer FR 4M 3969 cm3 81 PS 80 bhp 60 kW
1921 Fiat 520 Superfiat data
Body type4/5 seater tourer
Number of doors4
dimensions & weights
Wheelbase 3860 mm 152 inches
Track/tread (front) 1500 mm 59.1 inches
Track/tread (rear) 1500 mm 59.1 inches
Length 5235 mm 206.1 inches
Width 1740 mm 68.5 inches
Ground clearance
length:wheelbase ratio 1.36
Kerb weight 2300 kg 5071 lb
Weight distribution
fuel tank capacity
Drag coefficient
Frontal area
engine type naturally aspirated petrol
Engine manufacturer Fiat
Engine code
Cylinders V 12
Capacity 6.8 litre
6805 cc
(415.267 cu in)
Bore × Stroke 85 × 100 mm
3.35 × 3.94 in
Bore/stroke ratio 0.85
Valve gear
2 valves per cylinder
24 valves in total
maximum power output 81 PS (80 bhp) (60 kW)
at 2000 rpm
Specific output 11.8 bhp/litre
0.19 bhp/cu in
maximum torque
Specific torque
Engine construction
compression ratio
Fuel system
bmep (brake mean effective pressure)
Maximum RPM
crankshaft bearings
Engine coolant Water
Unitary capacity 567.08 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed 121 km/h (75 mph)
Power-to-weight ratio 35.27 PS/tonne (1000 kg)
25.94 kW/tonne (1000 kg)
34.78 bhp/tonne (1000 kg)
0.02 bhp/lb
Weight-to-power ratio 38.55 kg/kW
64.4 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
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 LA.SE.
Rear suspension LA.SE.
Wheel size front
Wheel size rear
Tyres front 895 x 135
Tyres rear 895 x 135
Brakes F/R
Front brake diameter
Rear brake diameter
Braked area
Gearbox 3 speed manual
Top gear ratio
Final drive ratio
Carfolio.com ID77
Production total
Model code
Model family
RAC rating 53.8
Insurance classification No information available
Tax band No information available
1921 Fiat 520 Superfiat added before December 1995.
Last modified 2013-02-28.