← all 2013 GMC Sierra K15 4WD trims
2013 GMC Sierra K15 4WD — 5.3L 8-cyl, Automatic 6-spd, 4WD
This 2013 GMC Sierra K15 4WD (5.3L 8-cyl, Automatic 6-spd, 4WD) is flex-fuel (gasoline or E85). FLEX-FUEL
17
MPG combined (15 city / 21 hwy)
$3,650
est. fuel cost / year (EPA, 15k mi)
523 g/mi
tailpipe CO₂
Other 2013 GMC Sierra K15 4WD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 4.3L 6-cyl, Automatic 4-spd, 4WD | REGULAR | 16 | $3,900 |
| 4.8L 8-cyl, Automatic 4-spd, 4WD | FLEX-FUEL | 15 | $4,150 |
| 6.2L 8-cyl, Automatic 6-spd, 4WD | FLEX-FUEL | 14 | $4,450 |
EPA fuel type: Gasoline or E85 · class: Standard Pickup Trucks 4WD · retrieved 2026-06-14.