In 1972 BMW presented the Turbo, a very advanced concept car that anticipated, among other things, the famous M1, presented at the Paris Motor Show in 1978. This impressive coupé was equipped with a 3.5-liter 6-cylinder engine and 277 horsepower, which made the M1 the fastest sports car in German production. The M1 remained in production from 1978 to 1981 and also had a good sports career: many remember the Pro-Car single-brand series, held on the Formula 1 Grand Prix weekends. Homologated in Group 4-5 then in Group B, the M1 also ran in rallies and on track and was also widely used in the American IMSA series, with sometimes highly modified bodywork.