Special Report

Cars With the Worst Gas Mileage

Falling gasoline prices have, at least temporarily, slowed the improvement in the average fuel efficiency of cars Americans choose to buy. Since reaching a peak of 25.8 miles per gallon (mpg) in August of 2014, the average fuel economy of new cars sold in the U.S. market dropped to 25 mpg this past November, according to researchers at the University of Michigan’s Transportation Research Institute.

The recent Volkswagen TDI scandal — in which it came to light that the German manufacturer intentionally misrepresented the fuel efficiency of its diesel vehicles — highlights the importance of fuel efficiency to Americans, even in times like now, as gas prices are at a multi-year low. Much of the decrease in overall fuel economy is attributable to higher sales of pickup trucks and SUVs, cars that burn more fuel than smaller, lighter vehicles. Other extremely low efficiency luxury models continue to reach high-end buyers as well. The Bugatti Veyron gets roughly 15 miles per gallon on the highway and 8 miles per gallon in the city. Based on Environmental Protection Agency (EPA) estimates, 24/7 Wall St. reviewed the 20 cars with the worst gas mileage sold in the U.S.

The manufacturers or importers of most vehicles with a fuel economy below 22.5 mpg are assessed a gas-guzzler tax. Pickup trucks and SUVs are exempt from the tax because of a concern on the impact such a tax would have on farmers and construction companies.

Click here to see the 20 least fuel-efficient cars.

If a car is considered a gas-guzzler when getting less than 22.5 mpg, a car getting less than 15 mpg certainly has to offer buyers extra special features to justify the lost fuel efficiency. In the majority of cases, what is being offered is extreme luxury or performance or both.

Of the 20 cars with the worst fuel efficiency, 14 cost at least $100,000, and four cost at least $500,000. Included on this list of low-efficiency vehicles are so-called hypercars such as the Lamborghini Aventador and the Ferrari FF. These vehicles are built to achieve peak speed and acceleration. Fuel efficiency is an afterthought.

The remainder of the cars with the worst fuel efficiency are built on light truck frames. Two are SUVs, two are large vans, and two are pickups. In all six cases, potential owners must choose to sacrifice fuel efficiency in order to gain utility.

Methodology: To identify the cars with the worst gas mileage, 24/7 Wall St. used data on estimated combined city and highway miles per gallon from the EPA. We only reviewed 2015 and 2016 models and used data on the 2016 model when available. We further screened by eliminating any duplicate models, opting for the model and trim with the worst mpg. If multiple trim levels of the same model have the same fuel efficiency, we only looked at one model.

Manufacturer’s suggested retail price (MSRP) data came from third-party sources, when not available from the manufacturer. The vehicle’s specifications came from the EPA’s reports. Gas-guzzler data came from the EPA’s most recent (2013) report on which vehicles are exempt from the tax and the EPA’s overview of the gas-guzzler tax.

These are the 20 cars with the worst fuel efficiency.