The Renault 4CV (French: quatre chevaux, pronounced [katʁə.ʃəvo]) is a rear-engined, rear-wheel-drive, 4-door economy supermini manufactured and marketed by the French manufacturer Renault from August 1947 through July 1961. It was the first French car to sell over a million units, and was superseded by the Dauphine.
The 4CV was of monocoque construction,[2] 3.6 m (11 ft 10 in) in length with front suicide doors.
CV is the abbreviation of cheveaux-vapeur, the French equivalent to "horsepower" as a unit of power. The name 4CV thus refers to the car's tax horsepower.
Source: Wikipedia