![Electric-car wells-to-wheels emission equivalencies in MPG, May 2017 [Union of Concerned Scientists]](http://images.hgmsites.net/tmb/electric-car-wells-to-wheels-emission-equivalencies-in-mpg-may-2017-union-of-concerned-scientists_100608699_t.gif)
Electric cars have no tailpipe emissions when running. But unless they're charged entirely on renewable energy—still statistically unlikely today—there are emissions associated with generating the electricity used to charge their batteries. For several years now, rigorous "wells-to-wheels" analyses of the carbon-dioxide emissions... Electric cars cleaner than any gas-only car for 97 percent of U.S. drivers
Electric cars have no tailpipe emissions when running. But unless they're charged entirely on renewable energy—still statistically unlikely today—there are emissions associated with generating the electricity used to charge their batteries. For several years now, rigorous "wells-to-wheels" analyses of the carbon-dioxide emissions...