Home / Auto News / News article: BMW M3 to Get Tri-Turbo Small Displacement Straight-Six - AutoGuide.com News
 |  Jul 08 2011, 6:57 AM

With the 2012 M5 now revealed in all its turbocharged glory, the auto tabloids have switched focus to the next-generation M3.

While the V8 has long been rumored as dead, the latest reports indicated BMW will switch back to a straight-six engine, opting instead for turbochargers to make up the difference for the decreased displacement. In fact, the next-gen M3 mill will drop almost a quarter of its size, down to 3.3-liters. The straight-six will then be blessed with not one, not two, but three turbochargers – one of which will be electrically powered. Rumors of this same setup on an X3 M model have surfaced before and if true, let’s hope the engineers in Munich have advanced electric turbos beyond the eBay kind.

[Source: AutoExpress]

  • LORENZO

    A TURBOCHARGED I6 ENGINE SHOULD HAVE BEEN BMW’S 1ST OPTION INSTEAD OF THE HEAVY V8

  • Sam

    @ LORENZO: Your facts are wrong. The S65 (4.0L V8) engine in the E9X M3 was, in fact, 33 pounds *lighter* than the S54 (3.2L I6) engine in the E46 M3, in spite of having two additional cylinders. This is due to the fact that the S54 block was cast iron and the S65 block was aluminum. That is why the S65 was so highly praised.

    It will be interesting to see if the F80 M3 will have an engine based on the old S54 architecture or will be a newly designed unit. If they go back to the S54 architecture (iron block), not only will it be the 33 pounds *heavier* than the S65, but it will also have the added weight of the three turbos and accompanying components.

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