GMC Sierra EV 20-mod battery, 11kW 15-mode charger Fuel Economy History
MPG by year — EPA official data.
Best MPG Year
2026
68 MPG combined
Latest Model
2026
68 MPG combined
| Year | Engine | City | Hwy | Combined | Fuel Cost/yr | |
|---|---|---|---|---|---|---|
| 2026 | Electricity EV | 75 | 61 | 68 | $1,100 | Details → |