GMC Sierra 4WD: MPG and fuel economy by year
The EPA has rated the GMC Sierra 4WD across 7 model years, from the 2020 GMC Sierra 4WD through the 2026 GMC Sierra 4WD. The most recent 2026 GMC Sierra 4WD returns 24 combined MPG.
Pick a year below to open the full GMC Sierra 4WD page for that model year. Each year page covers combined, city, and highway MPG, the trim variants the EPA rates separately, the annual fuel cost across three driving patterns, and a year-over-year comparison so you can see whether the car has improved.
Fuel economy by model year
Combined MPG, city MPG, highway MPG, and the EPA's estimated annual fuel cost for every model year of the GMC Sierra 4WD. Click any year to see the full breakdown for that model year, including trim variants, the drivetrain, and a comparison against other vehicles in its segment.
| Year | Model | Combined MPG | City | Highway | Annual fuel cost |
|---|---|---|---|---|---|
| 2026 | 2026 GMC Sierra 4WD | 24 MPG | 22 MPG | 26 MPG | $3,400 |
| 2025 | 2025 GMC Sierra 4WD | 24 MPG | 22 MPG | 26 MPG | $3,400 |
| 2024 | 2024 GMC Sierra 4WD | 24 MPG | 23 MPG | 27 MPG | $3,400 |
| 2023 | 2023 GMC Sierra 4WD | 24 MPG | 22 MPG | 27 MPG | $3,400 |
| 2022 | 2022 GMC Sierra 4WD | 24 MPG | 22 MPG | 26 MPG | $3,400 |
| 2021 | 2021 GMC Sierra 4WD | 24 MPG | 22 MPG | 26 MPG | $3,400 |
| 2020 | 2020 GMC Sierra 4WD | 24 MPG | 22 MPG | 26 MPG | $3,400 |
How the GMC Sierra 4WD compares against the Standard Pickup Trucks 4WD class
Buyers usually compare the GMC Sierra 4WD against other cars in the same EPA class. The list below shows the most efficient cars in the Standard Pickup Trucks 4WD class for the 2026 model year, the latest year on this page. Each link opens the full page for that car.
Source: U.S. EPA fuel economy dataset. Annual fuel cost assumes 15,000 miles of driving per year and a 55% city, 45% highway split.