Quote:
Originally Posted by renault_megane_dci
I red here and there that the VW flat four is no good for FE, is it the Beetl aerodynamic or the engine itself I don't know.
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That's because it's an ancient engine design.
Properly designed, boxers can be efficient.
But as most of the boxer designs end up in sporty or sports cars, the engines usually aren't designed for highest FE.