← all 2026 GMC Sierra 2WD trims
2026 GMC Sierra 2WD — 3.0L 6-cyl, Automatic 10-spd, RWD
This 2026 GMC Sierra 2WD (3.0L 6-cyl, Automatic 10-spd, RWD) runs on diesel. DIESEL
25
MPG combined (23 city / 28 hwy)
$3,150
est. fuel cost / year (EPA, 15k mi)
402 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 |
| 5.3L 8-cyl, Automatic 10-spd, RWD | REGULAR | 17 | $3,650 |
EPA fuel type: Diesel · class: Standard Pickup Trucks 2WD · retrieved 2026-06-14.