The 2018 BMW i3 is available as a 4-door, 4-seat hatchback. Starting at $44,450, the 2018 BMW i3 94AH is powered by a , 0-cylinder engine mated to an automatic transmission that returns an EPA estimated 129-mpg in the city and 106-mpg on the highway. The top of the line 2018 BMW i3 s w/Range Extender, priced at $51,500, is powered by a , 0-cylinder engine mated to an automatic transmission that returns an EPA estimated