The two-wheel drive 2018 Ford F-150 3.0-liter diesel is rated at 30 mpg highway, 22 in the city and 25 mpg combined, beating out the next most efficient half-ton truck, the Ram 1500 EcoDiesel, which nets 27 mpg on the highway and 23 combined.
When equipped with four-wheel drive, the diesel F-150 is rated at 20 mpg city, 25 on the highway and 22 combined. The Ram 1500 EcoDiesel, when equipped with four-wheel drive, matches the Ford with a combined mpg rating of 22, though the Ram beats the F-150 on the highway with its 27 mpg rating, and loses to it in the city by one mpg, with a rating of 19.
Power comes from a 3.0-liter diesel that makes 250 horsepower and 440 lb-ft, good for a maximum tow rating on the diesel model of 11,400 pounds when properly equipped.
The new diesel-powered F-150 is going to head to dealers in May 2018.
A version of this story originally appeared on Off-Road.com.