MPGe is a measure used by the U.S. Environmental Protection Agency (EPA) to compare the energy efficiency of electric vehicles to traditional gasoline-powered vehicles. It represents the number of miles an EV can travel on the energy equivalent to one gallon of gasoline. For example, an EV with an MPGe rating of 100 means it is as efficient as a gasoline car that gets 100 miles per gallon. MPGe helps consumers understand the relative efficiency of EVs compared to conventional vehicles, even though EVs don’t use gasoline.