The E36 M3 debuted in February 1992 and was in the dealer's showrooms in November that year. It was the first M3 powered by a straight-six engine; the engine used was a 2,990 cc (182 cu in) S50, which produced 210 kW (282 hp).
Initially available as a coupé only, BMW introduced M3 convertible and saloon versions in 1994, the absence of any M5 models in the BMW line-up between the end of E34 M5 production in 1995 and the launch of the E39 M5 in 1998 prompted the introduction of the 4-door Motorsport model.
Also in 1994, BMW produced the limited-edition M3 GT as a racing homologation special; all GTs were British Racing Green and featured an upgraded 295 PS (217 kW; 291 hp) 3.0-litre engine. 356 GTs were built.
Source: Wikipedia (original)