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BMW teases new M3 engine at full cry

Straight six has been BMW signature engine for nearly a century.

Straight six has been BMW signature engine for nearly a century.

Published Aug 14, 2013

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The Bavarian Motor Works, as Cyril never tires of pointing out, was formed during the First World War to produce inline, liquid-cooled six-cylinder aircraft engines for the Imperial air forces - and the straight six, with its inherent perfect primary balance, has been BMW's signature engine ever since, for very nearly a century.

Thus, a wave of approval pervaded anorakdom when it came out that the V8 powerplant of the current M3 would make way in 2014 for an advanced three-litre biturbo straight-six, codenamed S55, in the next-generation M3 sedan and M4 coupé.

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SUPERCAR CONTENDER

Numbers buzzing around the cybergarage suggest it will deliver about 335kW and 550Nm, enough to put either model squarely in the supercar league and, while BMW's M skunk works won't confirm or deny those figures, it has released an 18-second clip of the new 'traditional' BMW engine at under test.

Sit back, amp up your speakers, and enjoy.

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