The EPA recently revealed sold in America for 2018, chosen by class. The EPA split the list into two groups; one including electric cars, and one excluding them. We've combined the groups for you to see here.
Thanks to its tiny size and electric propulsion, the Smart ForTwo takes the top spot for two-seaters cars.
The 124 Spider from Fiat takes the crown for non-electric two-seaters thanks to its frugal 1.4-liter turbocharged inline four and six-speed manual transmission.
Because the 500e has four seats, it ranks in a different class than the Smart ForTwo. Aside from cheap running costs, it's incredibly practical for short trips.
Thanks to a tiny 1.5-liter turbocharged four-cylinder, the base Mini Cooper drop-top edges out the competition in terms of fuel economy. In order to get the most efficiency, you'll have to get the manual transmission. That sounds like a win-win to us.
Thanks to some advanced chassis engineering and battery tech, BMW's first production electric car, the i3 hatch, takes the win for the subcompact class.
The Toyota Yaris iA (formerly the Scion iA) is the most efficient subcompact powered by gasoline. Interestingly, the iA is just a Mazda2 underneath. The more you know!
The all-electric variant of everyone's favorite German hatch, the e-Golf, is most efficient in its class with a combined measurement of 119 MPGe.
Toyota's tiny Prius manages to squeeze out 46 MPGs from its 1.5-liter inline four hybrid drivetrain thanks to the help of a continuously variable transmission.
With a 136 MPG equivalent measurement from the EPA, the new electric Ioniq from Hyundai is the most efficient car on this list.
Of course, the Prius c isn't the only Prius to make this list. The normal-sized Prius Eco also makes the cut with a combined 46 MPG.
Tesla's cheapest Model S, the dual-motor 75D, is the most efficient large-sized car you can buy in 2018. Even with the base battery, it can still get to 60 mph in less than six seconds.
The plug-in gas-powered Ioniq hybrid, with a reading of 58 MPG combined, is the most fuel-efficient car you can currently buy new.
Though we'd classify the all-electric Chevy Bolt as more hatchback than wagon, the EPA thinks differently. No matter the case, it's able to achieve an impressive 238 estimated miles of range and a 119 combined MPGe rating.
Again, we'd probably call the Kia Niro more of a crossover than a wagon. Still, it can achieve a combined 50 MPG, which is good by any standard.
The Volvo V90 is the only car to nab a top spot on the EPA's list of most efficient cars that isn't an EV. Of course, to get the combined MPG rating above, you'll have to opt for the base 2.0-liter turbo front-wheel drive trim.