Bugatti Type 37 I gallery (1926–1930)
A lightweight four-cylinder sports racer built on the Type 35 chassis for voiturette class competition.
Introduced in 1926, the Bugatti Type 37 was engineered as a more accessible, easier-to-maintain alternative to the dominant straight-eight Type 35. It retained the same lightweight racing ladder chassis, agile geometry, and iconic two-seater roadster coachwork with the signature horseshoe grille and cable-operated drum brakes. The major powertrain transformation was the installation of a 1.5-liter inline-four engine featuring a single overhead camshaft and three valves per cylinder, producing around 60 horsepower in naturally aspirated form. This engine was coupled with a robust four-speed manual gearbox. To keep production costs reasonable for privateer racers, wire-spoke wheels were fitted as standard instead of cast alloy units. In 1927, Bugatti introduced the supercharged Type 37A variant equipped with a Roots supercharger and magneto ignition, raising output to roughly 85 horsepower. The Type 37 and 37A enjoyed widespread popularity across Europe and North America, becoming iconic contenders in voiturette racing and beloved sports cars for amateur drivers.