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Originally Posted by denverpete
Ummm, isn't that kinda the definition of fuel efficiency? Even if most people actually look at miles per gallon of fuel. Or as I like to call it, MPG. It's catchy. You can use it if you want.....
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Not necessarily. If you read through my entire post, I have highlighted two kinds of fuel efficiency. The first is the efficiency with which the engine uses the fuel to make energy (peak volumetric eff.), the second is the efficiency with which the car uses the fuel (max mileage).