Ferrari 125 F1

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Ferrari 125 F1
SuccessorFerrari 275 F1
ClassFormula One car
Engine(s)1.5 L Colombo 125 V12
Wheelbase2160 mm (85 in)
2320 mm (91 in)
Length3685 mm (145 in)
Width1400 mm (55 in)
Height1025 mm (40 in)
Curb weight710 kg (1565 lb)
DesignerGioacchino Colombo
ManualService Manual
See also the 125 S, a sports racer sharing the same engine

The 125 F1 was Ferrari's first Formula 1 car. It shared its engine with the 125 S sports racer which preceded it by a year, but was developed at the same time by Enzo Ferrari and famed designer, Gioacchino Colombo.

The 125 F1 used a supercharged 1.5 L V12 engine and sported a steel tube-frame chassis with longitudinal and cross members[1]. It had a double wishbone suspension with a transverse leaf spring in front and a torsion bar in the rear which was upgraded to a de Dion tube for 1950. Worm and sector steering and four-wheel drum brakes were the norm for the time. The 2160 mm (85 in) wheelbase was uprated to 2320 mm (91 in) in the 1949 redesign.

The 125 F1 was powered by Gioacchino Colombo's 1.5 L (1497 cc/91 in³) 60° V12. It had a single overhead camshaft on each bank of cylinders with a 60° angle between the two banks. The engine had two valves per cylinder fed through one Weber 40DOC3 or 50WCF carburettor. With just a 6.5:1 compression ratio, the supercharged engine still produced 230 hp (172 kW) at 7000 rpm. However, the Roots-type single-stage supercharger was incapable of producing the high-end power required to compete with the strong eight-cylinder Alfa Romeo 158 and four-cylinder Maserati 4CLT. Strong driving and a nimble chassis, however, allowed the company to place third in its first outing, at the Valentino Grand Prix on September 5, 1948, and the company persevered in racing.

For 1949, the engine was further modified with dual overhead camshafts (though still two valves per cylinder) and a two-stage supercharger. This combination gave the car better top-end performance and the resulting 280 hp (209 kW) gave it five Grand Prix wins. Development continued the following year, but the problematic superchargers were dropped in favor of larger displacement and Lampredi's 275 engine superseded the original Ferrari engine.


The 125 F1 debuted at the Valentino Grand Prix on September 5, 1948. Three cars were fielded, with drivers Prince Bira of Siam, Nino Farina, and Raymond Sommer who placed third in the race.

Date Location Driver
October 24, 1948 Garda Circuit, Salò Giuseppe Farina
July 3, 1949 Switzerland Grand Prix, Bern Alberto Ascari
July 31, 1949 Zandvoort Grand Prix Luigi Villoresi
August 20, 1949 Daily Express Trophy, Silverstone Alberto Ascari
September 11, 1949 Italian Grand Prix, Monza Alberto Ascari
September 25, 1949 Masaryk Circuit, Brno Peter Whitehead
July 13, 1950 Jersey Road Race Peter Whitehead
August 12, 1950 Ulster Trophy, Dundrod Peter Whitehead
October 1, 1950 Interstate Race, Interlagos Francisco Landi
January 25, 1951 São Paulo Grand Prix Francisco Landi
May 20, 1951 Governador Noguera Garcez Race, Interlagos Francisco Landi
June 28, 1951 Bõa Vista Grand Prix, Rio de Janero Francisco Landi


  • Ascerbi, Leonardo (2006). Ferrari: A Complete Guide to All Models. Motorbooks. ISBN 0-7603-2550-2.