10. Kia Forte FE
31 City / 41 Highway / 35 Combined
$17,790
Redesigned and reimagined for 2019, the Kia Forte cracks the top 10 with its most-efficient FE model. The 2.0-liter inline-four engine underhood produces 147 horsepower (109 kilowatts), and helps return fuel economy of 31 miles per gallon in the city, 41 highway, and 35 combined. Annual fuel costs are a mere $1,050, according to the EPA.
9. Jaguar XF Diesel
31 City / 42 Highway / 35 Combined
$56,485
Jaguar's large and lovely XF isn't usually known for its efficiency – unless we're talking about the 35 mile-per-gallon combined diesel model. The turbocharged 2.0-liter engine produces 180 horsepower (134 kilowatts) and helps return 31 miles per gallon in the city and 42 on the highway. Annual fuel costs are a bit higher at $1,300, due in part to the price of diesel.
7. Hyundai Elantra Eco (Tie)
32 City / 40 Highway / 35 Combined
$21,050
The whole updated Hyundai Elantra range ranks near the top of the class in terms of efficiency. But it's the 1.5-liter-powered Elantra Eco (note: Elantra Limited pictured) that gets the highest marks, returning 32 miles per gallon in the city, 40 on the highway, and 35 combined. Owners can expect to pay $1,050 in fuel costs per year.
7. Toyota Yaris Sedan (Tie)
32 City / 40 Highway / 35 Combined
$15,450
The Mazda-based, Scion-faced Toyota Yaris sedan doesn't look much like the rest of the lineup, but its efficiency stays the course with other Toyota products (some you'll see later on this list). The 1.5-liter four-cylinder produces a mere 106 horsepower (79 kilowatts) but helps return 32 miles per gallon in the city, 40 highway, and 35 combined. Annual fuel should set owners back about $1,050.
6. Honda Fit
33 City / 40 Highway / 36 Combined
$16,190
The current Honda Fit has been around for a minute, but even in old age, it's still one of the most efficient cars in America. With its 1.5-liter four-cylinder engine, the Fit gets 33 miles per gallon in the city, 40 highway, and 36 combined. Owners should expect to pay an annual fuel cost of $1,050.
5. Jaguar XE Diesel
32 City / 42 Highway / 36 Combined
$38,515
Believe it, the Jaguar XE Diesel is the third-most fuel-efficient car in the U.S. in 2019. Granted, it's a trim of a sedan that typically isn't near the top of any fuel efficiency lists, but it's a Jag nonetheless. The XE diesel, powered by a 2.0-liter four-cylinder producing 180 horsepower (134 kilowatts), gets up to 36 miles per gallon combined – which rivals the next two cars on this list. But it owners an average of $1,300 per year in fuel.
3. Honda Civic Sedan 1.5T (Tie)
32 City / 42 Highway / 36 Combined
$19,450
Honda has two of the most fuel-efficient cars in America on this list: the Fit, and the turbocharged Civic sedan. With the smaller 1.5-liter engine and a continuously variable transmission, the Civic gets 32 miles per gallon in the city, 42 on the highway, and 36 combined. Owners should expect to pay an annual fuel cost of $1,050.
3. Toyota Corolla Hatchback (Tie)
32 City / 42 Highway / 36 Combined
$19,990
The Toyota Corolla Hatchback boots the iM five-door from the Toyota lineup (though, the Yaris still exists). And with 32 miles per gallon city, 42 highway, and 36 combined, it's more efficient than its outdated sibling. The 2.0-liter four-cylinder engine with a continuously variable transmission produces 168 horsepower (125 kilowatts), and costs owners an average of $1,050 in fuel per year.
2. Chevrolet Cruze Diesel Sedan
31 City / 48 Highway / 37 Combined
$25,260
Though the diesel Cruze is dying in North America, Chevy isn't pulling the metaphorical plug on it in other markets just yet. For 2019, both the diesel sedan and hatchback soldier on in the States. The former four-door option is the second most fuel-efficient non-hybrid in the U.S. right now, with 31 miles per gallon in the city, 48 on the highway, and 37 combined. The 1.6-liter four-cylinder diesel engine produces 137 horsepower (102 kilowatts), and annual fuel costs are an estimated $1,250.
1. Mitsubishi Mirage
36 City / 43 Highway / 39 Combined
$13,795
The cheapest car of 2019 is also the most fuel efficient. Even with relatively recent updates, the Mitsubishi Mirage maintains its 36 miles per gallon city, 43 highway, and 39 combined rating, beating the next-best Chevy Cruze Diesel by a modest two MPG overall. With its tiny 1.3-liter engine, just 78 horsepower (58 kilowatts), and a continuously variable transmission, Mirage owners spend an average of $950 per year on fuel.
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