The standard, or base model, M4 was introduced a variant of the F82 BMW M4 for the 2015 model year. The M4 was a sports car that was built in both coupe and convertible body styles, and was powered by a 3.0L twin-turbo inline six engine known as the S55. The S55 engine found in the base M4 had an output of 425hp, which was sent to the rear wheels via a 6 speed manual or 7 speed DCT automatic transmission. Production of the Base Model M4 lasted until 2020, when it was replaced by the G82 BMW M4.