Several rear-engined cars were also produced with boxer-twin engines originally designed for motorcycles, such as the 1957-1975 Puch 500, the 1957-1959 BMW 600 and the 1959-1965 BMW 700. The Brazilian manufacturer Gurgel Motores used an in-house developed water-cooled boxer-twin engine (Enertron engine) and the Volkswagen air-cooled boxer-four in several models from 1988 to 1994.

The Toyota U engine