PHOTO CAPTION: Mitsubishi i-MiEV electric car.

EV 101: What Does MPGe Mean?

Mitsubishi i has range of 126 miles on 34kWh of energy, which is equivalent to one gallon of gasoline; thus its MPGe is 126 mpg.

Published: 27-Dec-2011

Next month, Mitsubishi will introduce a subcompact car with some hefty bragging rights. The 2012 Mitsubishi i stands as America's most fuel-efficient car, at 126 miles per gallon in city driving, according to the Environmental Protection Agency (EPA).

Such impressive fuel economy seemed impossible a few years ago. (The 2012 Toyota Prius gets "only" 52 m.p.g.) And, in fact, 126 m.p.g. will still be impossible when the car goes on sale in January.

You see, the Mitsubishi i is an all-electric vehicle, so there aren't really any gallons for it to gulp. A closer look at the EPA window sticker reveals that it's actually 126 miles per gallon equivalent (MPGe). The EPA rolled out this new term to help translate electric-car efficiency into a figure that most Americans understand.


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