Colin McRae Rally and DiRT Wiki

The BMW M1 Procar was originally conceived for the world of Group 4 sports car racing in the late 1970s, including the single-make M1 Procar Series. Following these circuit racing endeavours, a number of these cars were modified for stage rallying exploits, most notably by Oreca for the BMW France team and their drivers Bernard Darniche and Bernard Béguin.

For 1983, all Group 4 cars with an unexpired homologation could be applied for automatic Group B certification by the manufacturer, allowing the M1 to be competitively rallied until the demise of Group B in 1986. While Oreca and their M1 Rallye would contest national-level events in Europe to occasional success, its two World Rally Championship appearances at the 1982 and 1983 Tour de Course both ended in mechanical retirement, and the team cancelled the program after 1984.[1]

DiRT Rally 2.0[]

“Based on its road going equivalent, the BMW M1 Procar was used in a multitude of racing series. A Group 5 icon, this car attacked tarmac events, using its track racing pedigree to its advantage. ”
— In-game info, DiRT Rally 2.0

The BMW M1 Procar is a RWD Group B rally car in DiRT Rally 2.0, featured as the game's Season 1 DLC.

DIRT 5[]

The BMW M1 Procar Rally is an 80's Rally car in DIRT 5.

The car's official livery was added to the game in update 4.00.[2]