Rumors of BMW considering V6 engines have been floating around for quite some while now. One possible future application often mentioned when talking about such an engine is the upcoming F80 M3 (F82 M4). As we reported earlier, BMW was studying no less than four potential engine choices for the next M3.

To add to the speculation, we’ve just discovered that BMW has filed a patent for a unique twin-turbo V6 engine last year. Have a look at this schematic BMW submitted to the German patent office to describe the patent filing:
As BMW describes in their patent application, this image shows “the principle of this turbocharger layout invention (#1) in a 6-cylinder internal combustion



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