This seems pretty hard to do but is there a way to figure out how efficient a vehicle is based on fuel used and MPG? I know theres about 1/3 gone to exhaust 1/3 through radiator and 1/3 is work but I want to get an exact percentage on the work part. So it would be 33% if it was like what I just stated. I know weights of the vehicles, everything. I want to factor in as much as possible so I can get the closest possible percent. Thanks for any help!(adsbygoogle = window.adsbygoogle || []).push({});

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Turning MPG into % efficiency?

**Physics Forums | Science Articles, Homework Help, Discussion**