Range: 124 miles; 150/122 mpg-e. Debuting last year, the EV version of the Hyuindai Ioniq is one of the “greenest” cars sold in the U.S. while it’s not the longest-range model in the market, it leads all comers in terms of its sheer frugality, which the EPA says is the electric equivalent of a class-leading 150 mpg in city driving.