EV Range: 97 miles; MPG-e: 109; MPG-gas: 35; Base Price $49,295. This is for the eccentric-looking BMW i3 with the range extender gasoline engine that brings the vehicle’s effective range to 180 miles on a charge/tank. It costs $3,850 more than the full EV version (with a range of 114 miles on a charge), and is likewise eligible for a $7,500 federal tax credit.