Ferrari 125 S - 1947


125 S

This was the very first car to wear the Ferrari badge. The V12 engine was designed by Gioacchino Colombo with contributions from Giuseppe Busso and Luigi Bazzi. Sport and competition versions of the 125 S were built with different bodywork although the chassis and running gear of the cars remained basically identical.

The 125 S’s debut on the Piacenza circuit was, in the words of Enzo Ferrari himself, “a promising failure.” In fact, Franco Cortese had to pull out because of a problem with the fuel pump while leading the race. However, over the following four months, the 125 S was back on the track 13 times, winning six of its races.

Ferrari 125 S - 1947


V12 Engine

Bore/stroke 55 x 52.5 mm
Unitary displacement 124.73 cc
Total displacement 1496.77 cc
Compression ratio 9.5 : 1
Maximum power 87 kW (118 hp) at 6800 rpm
Power per litre 79 hp/l
Maximum torque -
Valve actuation single overhead camshaft per bank, two valves per cylinder
Fuel feed three Weber 30 DCF carburettors
Ignition single spark plug per cylinder, two magnetos
Lubrication wet sump
Clutch single-plate
Frame tubular steel
Front suspension independent, unequal-length wishbones, transverse leaf spring, hydraulic shock absorbers
Rear suspension live axle, semi-elliptic springs, hydraulic shock absorbers, anti-roll bar
Brakes drums
Transmission 5-speed + reverse
Steering worm and sector
Fuel tank capacity 72 litres
Front tyres 5.00 x 15
Rear tyres 6.00 x 15
Type two-seater spider
Length -
Width -
Height -
Wheelbase 2420 mm
Front track 1240 mm
Rear track 1240 mm
Weight 650 kg (dry)
Top speed 210 km/h
Acceleration 0-100 km/h -
0-400 m -
0-1000 m -
Motore anteriore, longitudinale, 12V 60°