For this list, we scanned for the best fuel economy across each type of powertrain – electric, plug-in hybrid, and gas-electric hybrids. As fate would have it, the 10 most efficient vehicles are all electric drive at this point.

I should note that due to their pricey battery packs, electric vehicles are still more expensive than their gasoline counterparts. Only a handful of the vehicles that I will highlight would actually make economic sense to purchase today when you look at total cost of ownership – even with $7,500 federal tax credits still out there. That gap is closing, however.

Despite another year of cheap fuel prices, 2019 will see a few new entrants to this list of the most fuel-efficient cars – the Kia Niro, Hyundai Kona, and Honda Clarity. Additionally, a few of the models come with upgraded battery packs and driving range.