← all 2026 GMC Sierra 2WD trims
2026 GMC Sierra 2WD — 5.3L 8-cyl, Automatic 10-spd, RWD
This 2026 GMC Sierra 2WD (5.3L 8-cyl, Automatic 10-spd, RWD) takes regular (87-octane) gasoline. REGULAR
17
MPG combined (16 city / 20 hwy)
$3,650
est. fuel cost / year (EPA, 15k mi)
514 g/mi
tailpipe CO₂
Other 2026 GMC Sierra 2WD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 2.7L 4-cyl, Automatic 8-spd, RWD | REGULAR | 20 | $3,100 |
| 3.0L 6-cyl, Automatic 10-spd, RWD | DIESEL | 25 | $3,150 |
EPA fuel type: Regular · class: Standard Pickup Trucks 2WD · retrieved 2026-06-14.