At 133 MPGe, Toyota Prius Prime wallops BMW i3 on energy efficiency
Move over, BMW: there's a new efficiency champion in town this year—and you'll have to give back that laurel wreath you've worn since 2014. Last week, final EPA fuel-efficiency results were released for the 2017 Toyota Prius Prime plug-in hybrid. When running in all-electric mode, that car is now the most energy-efficient vehicle you can buy...