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2026 GMC Sierra 4WD — 3.0L 6-cyl, Automatic 10-spd, 4WD
This 2026 GMC Sierra 4WD (3.0L 6-cyl, Automatic 10-spd, 4WD) runs on diesel. DIESEL
24
MPG combined (22 city / 26 hwy)
$3,250
est. fuel cost / year (EPA, 15k mi)
428 g/mi
tailpipe CO₂
Other 2026 GMC Sierra 4WD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 2.7L 4-cyl, Automatic 8-spd, 4WD | REGULAR | 18 | $3,450 |
| 5.3L 8-cyl, Automatic 10-spd, 4WD | REGULAR | 16 | $3,900 |
| 6.2L 8-cyl, Automatic 10-spd, 4WD | PREMIUM | 16 | $4,800 |
EPA fuel type: Diesel · class: Standard Pickup Trucks 4WD · retrieved 2026-06-14.