The BMW M5 is a high performance variant of the BMW 5 Series marketed under the BMW M sub-brand. It is considered an iconic vehicle in the sports sedan category. The majority of M5s have been produced in the sedan (saloon) body style, but in some countries the M5 was also available as a wagon (estate) from 1992 to 1995 and from 2006 to 2010. The first M5 model was hand-built in 1985 on the E28 535i chassis with a modified engine from the M1 that made it the fastest production sedan at the time. M5 models have been produced for every generation of the 5 Series since 1985. E28 M5 (1984–1988) The first BMW M5, based on the E28 5 Series, was manufactured from October 1984 to June 1988. It made its debut at the Amsterdam Motor Show in February 1985. It was based on the 535i chassis with various mechanical changes, most notably the M88/3 engine (shared with the E24 M635CSi grand tourer coupé) which was an updated version of the engine used in the M1 sports car. At its launch, the E28 M5 was the fastest production sedan in the world. The official markets for the E28 M5 were Europe, Great Britain, the United States, Canada, and South Africa. The European and South African cars used the M88/3 engine which has a power output of . Cars sold in the United States and Canada used a detuned version of the M88/3 called the S38B35, which was equipped with a catalytic converter and has a power output of . Due to an extended production run that exceeded BMW's original forecast of production volumes, a class action lawsuit was launched by owners in the United States. The results of this class action was that owners were given a voucher for in 1993. Production of North American specification M5 commenced in November 1986 and ended in November 1987. Aside from 96 cars which were assembled in kit form at BMW's Plant in Rosslyn, South Africa, all cars were assembled by hand in Germany. Assembly took place at BMW Motorsport's plant in Preussenstrasse in Munich prior to the 1986 factory summer vacation. Thereafter, the M5 production was moved to Daimlerstrasse in Garching where the remainder were built. Production of the M5 continued until November 1988, almost a year after BMW had ceased production of regular E28 models. With a total production