According to FuelEconomy.gov, the 2015 Dodge Ram 1500 Pickup with a 5.7-liter Hemi engine has a combined average fuel economy rating of 15 to 17 miles per gallon. The city fuel economy is 13 to 15 mpg and the highway fuel economy is 19 to 22 mpg.
Certain factors affect the Environmental Protection Agency mpg rating of this vehicle.
Two-wheel drive, six-speed transmission and midgrade gasoline-using vehicles give an EPA rating of 14 mpg city, 20 mpg highway and 16 combined.
Models featuring two-wheel drive and an eight-speed transmission earn an EPA rating of 15 mpg city, 22 highway and 17 combined.
A combo of four-wheel drive, six-speed transmission and midgrade gasoline give an EPA rating of 13 mpg city, 19 highway and 15 combined.
A four-wheel drive, eight-speed transmission vehicle using midgrade gasoline produces an EPA rating of 15 mpg city, 21 highway and 17 combined.