Truck fuel economy varies enormously from one model and configuration to the next, and the most efficient choice depends on matching the type of truck to how you’ll actually use it rather than chasing a single nameplate. A few factors drive most of the difference.
Powertrain is the biggest factor
In rough order of efficiency: full hybrid and plug-in hybrid pickups lead, followed by small turbocharged gas engines and diesels (which shine on the highway and when towing), with large naturally aspirated V8s at the thirsty end. A growing number of electric trucks skip gas entirely and are extremely cheap to run per mile — though heavy towing cuts their range sharply, which matters if that’s your use case.
Size, drivetrain, and setup
Mid-size trucks generally beat full-size on fuel simply because they weigh less and push less air. Two-wheel drive is more efficient than four-wheel drive (less weight and drivetrain loss), and small choices help at the margins: smaller wheels, all-season rather than aggressive off-road tires, and a tonneau cover that smooths airflow over the bed.
Frequently asked questions
Most fuel-efficient truck type? Hybrid and plug-in hybrid pickups, generally in the mid-size class.
Does 4WD hurt mpg? Yes, modestly, from added weight and drivetrain losses.
Where do I find current mpg numbers? The EPA’s fueleconomy.gov, by year and trim.