The 5 most fuel-efficient cars on the road today - and the 4 least fuel-efficient ones

The 2020 Versa enjoys 32 mpg in urban driving conditions and 40 mpg on the highway for an EPA estimate of just below 36 miles per gallon combined.

The Corolla hatchback is new for 2019, and the vehicle's 42 miles per gallon on the highway make it a new car worth considering for anyone with a long freeway commute. In the city, the Corolla Hatchback averages 32 mpg.

A 2019 Corolla Hatchback has myriad standard safety features such as automatic emergency braking and lane-keeping assistance.

The Honda Fit gets 36.5 mpg in combined city and highway driving. As is to be expected, the Fit is slow to reach highway speeds, given the 130-horsepower engine. But it handles well and enjoys good safety ratings.

Though the Mirage's 36 mpg in the city and 41 mpg during highway driving are certainly impressive, the car's exceptional fuel economy comes at the great expense of power. The 3-cylinder engine is rated at a mere 78 horsepower.

In their test of a new Mitsubishi Mirage, reviewers from Kelley Blue Book reported an agonizingly slow 13 second 0 to 60 mile per hour acceleration. But as an efficient commuter car, it is an affordable choice in terms of initial cost and fuel expenses.

According to the Department of Energy, over the course of a half-decade, a 2020 Ford Shelby GT500 Mustang will cost you some $10,500 more in fuel expenses than would the average new car.

At current average fuel prices, driving 25 miles in a Shelby GT500 costs nearly $6.

The Rolls-Royce fleet is known for luxury, not fuel efficiency. The company's Dawn, Wraith, Ghost, and Phantom vehicles have the dubious distinction of getting a paltry 14 mpg.

The Phantom has a 6.7-liter engine, while the other three are 6.6-liter vehicles.

While it's the only Ferrari with enough seating for a family of four, a GTC4Lusso probably doesn't make sense as a family car given its gas mileage.

The vehicle's $300,000 price tag also makes it a slightly illogical choice, though the car's 690-horsepower V-12 engine is certainly a draw for auto enthusiasts.

A new Bugatti Chiron gets a paltry 11 mpg in combined driving, according to the US Department of Energy. And the ratings would be even lower if the $3 million vehicle could ever be driven near its top speed on city or highway roads.

A 2019 Chiron has a horsepower rating of 1,500 and a reported top speed just over 300 miles per hour.