F1 engine efficiency

I thought "our" road cars were anywhere from 60-70% and F1 cars might be up at the 80-85% range. This is 3 year old info based on memory but I would assume an F1 car has a better "everything".

 

I believe road cars to have about 10 to 15% efficiency. IE taking the actual BTU energy available in gasoline (100%) and converting it into the physical amount of work achieved; Moving the mass from one point to another.

F1 engines in general would be much less efficient as their goal is to produce maximum horsepower per engine size.
Efficiency ranks far down the priority totem pole.
This is why I am in favor of a total fuel quantity per race instead of engine size as the limiting factor.
Use the brain power of the best engine designers in the world to work on finding more EFFICIENT ways of converting energy into power.

 

here's a nice diagram...
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