All LMDh cars use a spec hybrid system comprising a 49bhp electric motor integrated into an Xtrac gearbox and powered by batteries from Williams Advanced Engineering. A turbocharged V8 engine of undisclosed capacity will take BMW’s racer up to the maximum 670bhp combined output permitted by the regulations.

Of the four nominated chassis suppliers, BMW – like Cadillac – has opted to go with Italian manufacturer Dallara, while Porsche will use Multimatic-supplied underpinnings and Acura has partnered with France’s Oreca.

Manufacturers have free reign over the design of their cars, however, and BMW has opted for a look which nods heavily to both its current road cars and celebrates the 50th anniversary of its performance division.

“The prototype is clearly recognisable as a BMW M car”, said the firm, highlighting the oversized kidney grilles on the front end – which channel air to the mid-mounted V8 – as well as the ‘hook’-style wing mirrors, distinctive rear light designs and even a side graphic which mimics the firm’s trademark Hofmeister kink. 

The racer’s camouflage – to be swapped for a sponsored livery in time for its competitive debut – contains references to some of the M division’s most successful race cars of the last half-century, including the 1976 BMW 3.0 CSL, 1981 BMW M1, 1986 BMW GTP and the more recent BMW M8 GTE.


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