According to the Fueleconomy.gov website, the list of the top ten most fuel efficient light vehicles includes nine electric vehicles and one plug-in hybrid-electric vehicle.
Electric vehicle fuel economy is measured in miles per gallon equivalent, or MPGe, where 33.7 kilowatt-hours of electricity is equal to one gallon of gasoline.
The Hyundai Ioniq Electric, with a combined city/highway fuel economy of 136 MPGe tops the list for model year (MY) 2017.
Three vehicles tied for the fifth spot on the list – the Fiat 550e, the Mitsubishi i-MiEV, and the Nissan Leaf – with 112 MPGe.
The BMW i3 REX, a range-extended electric vehicle, has a combined gasoline/electric city/highway fuel economy rating of 88 MPGe.
Top Ten Most Fuel Efficient Vehicles for 2017
|Hyundai Ioniq Electric||136||150/122|
|BMW i3 BEV (60 Amp-hour battery)||124||137/111|
|Chevrolet Bolt EV||119||128/110|
|BMW i3 BEV (94 Amp-hour battery)||118||129/106|
|Kia Soul EV||105||120/92|
|BMW i3 REX (94 Amp-hour battery)
0.6 L, 2 cyl,