GMC Terrain AWD Denali/AT4 Fuel Economy History
MPG by year — EPA official data.
Best MPG Year
2026
25 MPG combined
Latest Model
2026
25 MPG combined
| Year | Engine | City | Hwy | Combined | Fuel Cost/yr | |
|---|---|---|---|---|---|---|
| 2026 | Regular | 24 | 26 | 25 | $2,700 | Details → |
MPG by year — EPA official data.
| Year | Engine | City | Hwy | Combined | Fuel Cost/yr | |
|---|---|---|---|---|---|---|
| 2026 | Regular | 24 | 26 | 25 | $2,700 | Details → |