Anything that needs to rev to 9000+ rpm to produce power isn't going to be fuel efficient.
What was the reasoning for the Wankel? I mean what's the advantage over piston driven engine?
One day Wankel realises this would happen...
https://youtu.be/az39eqLIbyU
@edscoble started
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Anything that needs to rev to 9000+ rpm to produce power isn't going to be fuel efficient.