GMC Sierra K15 Cab Chassis 4WD: MPG and fuel economy by year
The EPA has rated the GMC Sierra K15 Cab Chassis 4WD across 4 model years, from the 2015 GMC Sierra K15 Cab Chassis 4WD through the 2018 GMC Sierra K15 Cab Chassis 4WD. The most recent 2018 GMC Sierra K15 Cab Chassis 4WD returns 17 combined MPG. The most efficient model year was the 2015 GMC Sierra K15 Cab Chassis 4WD at 18 MPG.
Pick a year below to open the full GMC Sierra K15 Cab Chassis 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 K15 Cab Chassis 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 |
|---|---|---|---|---|---|
| 2018 | 2018 GMC Sierra K15 Cab Chassis 4WD | 17 MPG | 15 MPG | 19 MPG | $3,500 |
| 2017 | 2017 GMC Sierra K15 Cab Chassis 4WD | 17 MPG | 15 MPG | 19 MPG | $3,500 |
| 2016 | 2016 GMC Sierra K15 Cab Chassis 4WD | 17 MPG | 15 MPG | 19 MPG | $3,500 |
| 2015 | 2015 GMC Sierra K15 Cab Chassis 4WD | 18 MPG | 16 MPG | 20 MPG | $3,300 |
How the GMC Sierra K15 Cab Chassis 4WD compares against the Special Purpose Vehicle 4WD class
Buyers usually compare the GMC Sierra K15 Cab Chassis 4WD against other cars in the same EPA class. The list below shows the most efficient cars in the Special Purpose Vehicle 4WD class for the 2018 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.