Related: Trump's EPA Expands Review of Obama's Mileage Rules
EPA and DOE Release 2018 Fuel Economy Guide
Vehicles from Hyundai, Chevrolet, BMW, and Volvo rank among the most fuel-efficient cars in their respective classes.
by Staff
December 15, 2017
Photo: U.S. Department of Energy
2 min to read
Photo: U.S. Department of Energy
The United States Environmental Protection Agency (EPA) and Department of Energy (DOE) released their annual Fuel Economy Guide for 2018. Vehicles from Hyundai, Chevrolet, BMW, and Volvo rank among the most fuel-efficient cars in their respective classes.
The EPA and DOE found that fuel economy leaders among their respective classes included the Hyundai Ioniq Electric (mid-size cars), Hyundai Ioniq Blue and BMW 740e xDrive (large cars), Chevrolet Bolt EV (small station wagons), and Volvo V90 FWD (mid-size station wagons).
Excluding battery-electric vehicles, the Toyota Prius Eco joins the Hyundai Ioniq Electric as best-in-class for fuel economy among mid-size cars.
Luxury cars from manufacturers such as Rolls-Royce, Ferrari, and Bentley rank among the least efficient vehicles by EPA size class. The EPA also ranked the Volvo V60 Polestar AWD and Mercedes-Benz AMG E63 S 4matic as the least fuel efficient small and mid-size station wagons, respectively.
The EPA and DOE determine fuel economy rankings based on combined city and highway fuel economy estimates, with city and highway consisting of 55% and 45% of driving, respectively.
The guide also includes additional information on diesel, compressed natural gas, fuel cell, battery-electric, hybrid, and ethanol-flexible fuel vehicles.
The Fuel Economy Guide provides annual fuel cost estimates for each vehicle, which are based on assumptions that a vehicle will travel 15,000 miles per year with cost-per-gallon assumptions for fuel. Greenhouse gas ratings are also listed with each vehicle.
Click to see the 2018 Fuel Economy Guide.
More Fuel
Fuel Prices Surge in September | September Fuel Update
September brought major fuel price swings, including diesel crossing $6 a gallon. Here’s how gas and diesel prices changed throughout the month, and where they stood heading into October.
Read More →
Turning Fleet Payment Data into Executive Insights
Ramel Lindsay of U.S. Bank Voyager discusses how fleets can transform payment and transaction data into actionable intelligence to reduce costs, improve oversight, and support executive decision-making.
Read More →
Why the IRS Raised Its Mileage Rate in the Middle of 2026
Fuel-price volatility drove the rare increase to 76 cents per mile, the fifth midyear adjustment since 2000.
Read More →
July Fuel Update: Prices Keep Rising in Light of More Conflict
Gas prices continue to rise as more and more conflicts do, too.
Read More →
Bob Adamsky on Fuel Volatility: "Don't Panic, Have a Plan."
When it comes to up and down fuel prices, Adamsky has a message for fleets: “Don’t panic.”
Read More →
How Fleets Can Gain Control of Non-Fuel Spend
Fuel often gets the spotlight, but non-fuel expenses can have a major impact on fleet costs. Ramel Lindsay of U.S. Bank Voyager discusses how fleets can gain better visibility and control over these often-overlooked expenditures.
Read More →
Fuel is Just the Start: How Middle East Tensions are Driving Up Fleet Maintenance Costs
The Middle East conflict is doing more than pushing up fuel prices. It’s also raising the cost of key maintenance products your fleet depends on, from motor oil to tires to windshield wipers. Here’s what you need to know about this budget-busting situation.
Read More →
June Fuel Update: Prices Fall Below $4
Drivers are finally getting some relief at the pump. The national average gas price has dropped below $4 a gallon for the first time in months, with prices falling in 47 states as oil markets react to developments in U.S.-Iran negotiations.
Read More →
Study: How 2026's Gas Price Hikes Affect Different Vehicle Types
New data from iSeeCars reveals how rising fuel costs have affected different vehicle segments as gasoline prices climbed nearly 46% over the past four months.
Read More →
May Fuel Update: All Regions Experience Declines
Gas prices are finally easing in much of the country, but experts warn global tensions could quickly reverse the trend as the national average remains well above last month’s levels.
Read More →