GMC Terrain MPG by model year
Combined EPA ratings for each GMC Terrain model year. Years with identical ratings are grouped together.
| Model year | Combined MPG | Best hwy | Versions |
|---|---|---|---|
| 2027 | 25–26 MPG | 28 | 3 |
| 2026 | 25–27 MPG | 28 | 3 |
| 2025 | 25–27 MPG | 28 | 2 |
| 2024 | 25–26 MPG | 29 | 2 |
| 2023 | 26 MPG | 29 | 2 |
| 2021–2022 | 26–27 MPG | 30 | 2 |
| 2020 | 23–27 MPG | 30 | 4 |
| 2018–2019 | 23–32 MPG | 39 | 6 |
| 2017 | 18–25 MPG | 31 | 5 |
| 2016 | 18–26 MPG | 31 | 5 |
| 2015 | 19–26 MPG | 31 | 5 |
| 2014 | 19–26 MPG | 31 | 8 |
| 2013 | 19–26 MPG | 31 | 8 |
| 2012 | 19–26 MPG | 31 | 8 |
| 2011 | 19–26 MPG | 31 | 6 |
| 2010 | 20–26 MPG | 32 | 4 |
Model years before 2005 are listed for reference without a separate page.
Source: U.S. Environmental Protection Agency and U.S. Department of Energy, fueleconomy.gov. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.