GMC Sierra 4WD Fuel Economy History
MPG by year — EPA official data.
Best MPG Year
2026
24 MPG combined
Latest Model
2026
24 MPG combined
| Year | Engine | City | Hwy | Combined | Fuel Cost/yr | |
|---|---|---|---|---|---|---|
| 2026 | Diesel Diesel | 22 | 26 | 24 | $3,500 | Details → |
| 2025 | Diesel Diesel | 22 | 26 | 24 | $3,500 | Details → |
| 2024 | Diesel Diesel | 23 | 27 | 24 | $3,500 | Details → |
| 2023 | Diesel Diesel | 22 | 27 | 24 | $3,500 | Details → |
| 2022 | Diesel Diesel | 22 | 26 | 24 | $3,500 | Details → |
| 2021 | Diesel Diesel | 22 | 26 | 24 | $3,500 | Details → |
| 2020 | Diesel Diesel | 22 | 26 | 24 | $3,500 | Details → |