The BMW 6 Series is the German automaker's top coupe line since 1976. It currently only has 2 generations since it was replaced in 1984 by a more expensive line of coupes, the
BMW 8 Series. That move proved to be unsuccessful and the 6 Series was revived in 2004.
The success of the
E9 coupes led to the development of the first 6 Series, the BMW E24. Introduced in 1976, the first 2 models were the 3.0-L 630 CS and the fuel-injected 3.3-L 633 CSi. In 1978 the 3.5-L 635 CSi was added and in 1979 the 2.8-L 628 CSi replaced the 630 CS making fuel-injection a standard in all models. Special versions include the Europen M635 CSi and the North American M6. In 1982, the E24 was re-styled while dropping the 633 CSi. The 628 CSi was next in 1986 and then the rest of the line in 1990. The 6 Series name will not appear again until 2004 with the release the
BMW E64 coupes.