2012 1 Series M Coupe Specification
The N54’s Last Stand?
the 300-hp 135i has switched from the twin-turbo N54 to the single-turbo N55 engine, the 1-series M coupe—like other BMWs recently unveiled with high-powered inline-sixes—gets a more powerful version of the N54, upgraded to about 335 hp. It’s mated to a slick six-speed manual gearbox—no automatic or dual-clutch transmission will be offered.
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