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.
Now this is great automotive advertising from the boys at BMW Motorsport. If this doesn't get your heart racing, then we're not sure what the hell will.
As we've already shown you, the new BMW M3 is a hot bit of precision machinery. While it is essentially a modified 3-series, the real difference is the M3's 4.0-liter V8. Trouble is, nowadays you pop the hood and you're overwhelmed with all sorts of plastic and coated metal covers. So BMW decided the M3's V8 engine…