1926 Fiat 503

The 503 is a rear wheel drive saloon (sedan) car with a front located engine, sold by Fiat. It is powered by a naturally aspirated engine of 1.5 litre capacity. This unit features side valve valve gear, 4 cylinder layout, and 2 valves per cylinder. It has an output of 27 bhp (27.4 PS/20.1 kW) of power at 3000 rpm. The engine drives the wheels via a 4 speed manual set of gears. Claimed weight at the kerb is 1535 kg. It is claimed to manage a top speed of 73 km/h which is 45 mph.


Key facts

1926 Fiat 503 information summary

What body style?
sedan/saloon with 4/5 seats
How long?
4000 mm
How heavy?
1535 kg
What size engine?
1.5 litre, 1460 cm3
How many cylinders?
4, Straight
How much power?
27.4 PS / 27 bhp / 20.1 kW @ 3000 rpm
How much torque?
How fast?
73 km/h, 45 mph

Similar models

4 door sedan/​saloon FR 4M 2296 cm3 29.9 PS 29.5 bhp 22 kW 1450 kg
1926 Fiat 503 data
Body type4/5 seater sedan/saloon
Number of doors
dimensions & weights
Wheelbase 2750 mm 108.3 inches
Track/tread (front) 1400 mm 55.1 inches
Track/tread (rear) 1400 mm 55.1 inches
Length 4000 mm 157.5 inches
Width 1660 mm 65.4 inches
Height 1780 mm 70.1 inches
Ground clearance
length:wheelbase ratio 1.45
Kerb weight 1535 kg 3384 lb
Weight distribution
fuel tank capacity
Drag coefficient
Frontal area
engine type naturally aspirated petrol
Engine manufacturer Fiat
Engine code
Cylinders Straight 4
Capacity 1.5 litre
1460 cc
(89.095 cu in)
Bore × Stroke 65 × 110 mm
2.56 × 4.33 in
Bore/stroke ratio 0.59
Valve gear side valve (SV)
2 valves per cylinder
8 valves in total
maximum power output 27.4 PS (27 bhp) (20.1 kW)
at 3000 rpm
Specific output 18.5 bhp/litre
0.3 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 365 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 73 km/h (45 mph)
Power-to-weight ratio 17.83 PS/tonne (1000 kg)
13.12 kW/tonne (1000 kg)
17.59 bhp/tonne (1000 kg)
0.01 bhp/lb
Weight-to-power ratio 76.24 kg/kW
127.35 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 10.60 m
Front suspension
Rear suspension
Wheel size front
Wheel size rear
Tyres front 740 x 140
Tyres rear 740 x 140
Brakes F/R
Front brake diameter
Rear brake diameter
Braked area
Gearbox 4 speed manual
Top gear ratio
Final drive ratio
Carfolio.com ID91575
Production total
Model code
Model family
RAC rating 10.5
Insurance classification No information available
Tax band No information available
1926 Fiat 503 added 2002-01-18.
Last modified 2013-02-28.