BMW M1

The road-going BMW M1 produced 277 hp, with BMW quoting a top speed of roughly 262 km/h.

The road-going M1 engine used four valves per cylinder, mechanical fuel injection and individual throttle bodies.

The M1 was powered by a 3.5-litre M88 inline-six mounted behind the passenger compartment.

BMW produced the M1 from 1978 to 1981, with official BMW material recording 453 cars built in total.

After the project was reorganized, production M1s received final assembly in Germany by Baur.

Developments of the M88 engine family used in the M1 later powered other BMW M road cars, including early M5 models.

The M1's wedge-shaped body was designed at Italdesign under Giorgetto Giugiaro, evolving themes from the earlier BMW Turbo concept.

BMW initially planned to produce the M1 with Lamborghini, but the Italian company's financial problems forced the project to be reorganized.

The BMW M1 was conceived around Group 4 racing homologation, which required a production run of road cars.

The M1 was the first car developed by BMW Motorsport GmbH as a distinct model rather than a performance derivative of an existing BMW.