This book is the ultimate collection of road tests, technical and specification data, comparison tests and information for buying a used BMW 6-Series. Models covered include: 630CS, 633CSi, 630 Alpina, 630CSi, M635CSi, 635CSi, 628CSi, 633CSi turbo, 635CSi automatic. After the introduction of the 6-Series coupes at the Geneva Show in March 1976, the cars were an immediate hit with BMW fans. The cars were so popular that, over the years, with the exception of additional spoilers and a modified rear bumper wraparound (the latter in 1982), that styling remained unchanged during a production run of 16 years. Final changes came in may 1987 and the last cars were built in 1989. This book will help you find the best car for the money.