BMW M1

Lore & Background

The motorsport division of BMW, headed by Jochen Neerpasch, wanted to compete in Group-5 racing against arch rival Porsche. Development of the M1 was initiated with a strict mid-engine layout. BMW partnered with Lamborghini to build the car, but Lamborghini's financial position deteriorated, and BMW reassumed control in April 1978 after seven prototypes were built. The tubular steel space-frame chassis was the work of Gianpaolo Dallara, and the fibreglass body was designed by Giorgetto Giugiaro, inspired by the 1972 BMW Turbo concept car. A group of former Lamborghini engineers founded Italengineering to complete the car's design.

The M1 coupé was hand-built between 1978 and 1981. The engine, a 3453 cc M88/1 straight-six with mechanical fuel injection, was developed by Paul Rosche. It has six separate throttle bodies, twin-cams, and 4 valves per cylinder. The car features unassisted rack-and-pinion steering, double-wishbone suspension, and ventilated steel brakes. The interior was basic, with leather and cloth, and only left-hand drive was available. The body was manufactured by Italian firm TIR, the chassis by Marchesi, and final assembly was done by German specialist Baur. Only 453 production cars were built.

Reader's Guide

The BMW M1 holds significance as BMW's first mid-engine mass-produced car and a rare homologation special. Its development story involves a partnership with Lamborghini that collapsed, forcing BMW to complete the project themselves. The M1's racing legacy includes the Procar BMW M1 Championship, a one-make series that ran as a support for Formula One in 1979 and 1980, featuring drivers like Niki Lauda and Nelson Piquet. An M1 Art Car painted by Andy Warhol raced at the 24 Hours of Le Mans in 1979, finishing 6th overall. The M1 was also campaigned at Le Mans from 1981 to 1986 and was converted to Group B rally spec by BMW France for the 1982 season. The 1984 season saw its most successful rally results, with Bernard Béguin winning two rallies and claiming an ERC podium. The M1's spiritual successor, the i8, became the second mass-produced mid-engine BMW in 2014. The M1 Homage concept was unveiled in 2008 to commemorate the 30th anniversary, and the Vision M Next concept in 2019 drew design inspiration from the M1.

Did You Know?

• The M1 was the first car solely developed by BMW M.
• Only 453 production cars were built, making it one of BMW's rarest models.
• The M1's engine was later used in the South African version of the 745i, the E24 M6/M635CSi, and the E28 M5.
• An M1 Art Car painted by Andy Warhol raced at the 1979 24 Hours of Le Mans, finishing 6th overall.

The Italian Genesis

BMW's motorsport arm, led by Jochen Neerpasch, set out to build a strictly mid-engine machine capable of challenging Porsche in Group 5 competition. The problem was practical: BMW could not manufacture the 400 road-going examples required for homologation within the stipulated window. The solution was an unusual alliance with Lamborghini, whose Italian workshop would handle chassis detailing, prototype assembly, and production. Gianpaolo Dallara designed the tubular steel space frame that would underpin the car. Yet Lamborghini's financial health collapsed almost immediately, and by April 1978—after just seven prototypes had rolled out—BMW reclaimed full control of the project. Compounding the difficulty, shifts in Group 5 regulations meant the M1 would ultimately enter Group 4 competition instead. The fibreglass bodywork, penned by Giorgetto Giugiaro with design cues drawn from BMW's 1972 Turbo concept, was finished by Italengineering, a small firm founded by former Lamborghini engineers operating less than ten miles from their old employer's facility.

A Powertrain Built for Purpose

The M1 holds the distinction of being the first automobile developed entirely by BMW's M division. At its heart sits the 3,453 cc M88/1 inline-six, a unit engineered by Paul Rosche—the same man behind the S14 four-cylinder and the S70/2 V12. The engine features six individual throttle bodies, dual overhead camshafts, and four valves per cylinder, with fuel delivery handled by Kugelfischer-Bosch mechanical injection and ignition managed by Magneti-Marelli. In road trim it produces 277 PS at 6,500 rpm and 330 N·m of torque at 5,000 rpm, propelling the car to a top speed of 265 km/h. Power reaches the rear wheels through a ZF Friedrichshafen five-speed manual gearbox fitted with a 40-percentage locking limited-slip differential. The chassis employs unassisted rack-and-pinion steering, double-wishbone suspension with Bilstein gas-charged dampers, and ventilated steel discs measuring 300 mm up front and 297 mm at the rear. Campagnolo alloy wheels shod in Pirelli P7 rubber complete the mechanical package.

Championship Glory and the Art Car

In 1979, Jochen Neerpasch conceived the Procar BMW M1 Championship, a one-make series running as a support event to Formula One. The format was elegant: every competitor drove an identical M1, and the grid featured prominent F1 names. Niki Lauda claimed the 1979 title, followed by Nelson Piquet in 1980. Once BMW satisfied Group 4 entry requirements, the Procar machines were deployed across the World Championship for Makes and various national series. The M1's Le Mans story is equally compelling. In June 1979, Hervé Poulain, Manfred Winkelhock, and Marcel Mignot piloted an M1 Art Car—its bodywork painted by Andy Warhol—finishing second in the IMSA GTX class and sixth overall. The car continued at Le Mans through 1986, classified as a Group B entry. BMW France also prepared a Group B rally specification for the 1982 season, with the car campaigned through 1983 before the Motul privateer team took it on in 1984, a year that proved the M1's most successful in rallying.

Hand-Built Rarity and Lasting Legacy

Production of the M1 was a remarkable chain of Italian craftsmanship and German precision. The fibreglass body panels were moulded by TIR in Reggio Emilia, the tubular chassis was fabricated by Modenese firm Marchesi, and Italdesign in Turin completed the bodywork and fitted the interior. Partly assembled cars then crossed into Germany, where specialist coachbuilder Baur performed the final hand assembly, installing the M88/1 engines shipped from BMW's Munich facility. Each car received its last inspection at BMW Motorsport before delivery. In total, only 453 examples were built between 1978 and 1981—399 for the road and 53 for competition—making it one of the rarest BMW models ever produced. The M1 also stands as the first mass-produced mid-engine BMW, a distinction not repeated until the i8 plug-in hybrid. In 2004, Sports Car International ranked it tenth among the top sports cars of the 1970s, a testament to its enduring reputation.