12 greenest cars

The American Council for an Energy Efficient Economy says these cars are easiest on the environment.

Smart Electric Drive

greenest cars daimler smart ev
  • MPGE: 107

The Smart Electric Drive, a plug-in version of the Smart ForTwo, tops this year's Greenest Cars list assembled by the American Council for an Energy-Efficient Economy (ACEEE), a non-profit group that promotes energy saving measures. The all-electric two-seater goes 68 miles on a full charge, which is plenty for city driving. It gets 107 miles per "gallon equivalent" of electricity. That's a measure of how far a car goes on the same amount of energy as that contained in one gallon of gasoline.

- Last updated January 28 2014 11:57 AM ET
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