BMW is launching a new high-performance, 3.0-liter inline six for its M cars. No surprise yet. It also has three turbochargers, produces 381 hp and 546 lb-ft of torque, and only revs to 5,400 rpm. Ruh Roh. Yes, it's a diesel. »1/26/12 10:00am 1/26/12 10:00am
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