2008 GMC Sierra K15 4WD vs 2008 GMC Sierra K15 AWD
| EPA figure | 2008 GMC Sierra K15 4WD | 2008 GMC Sierra K15 AWD |
|---|---|---|
| Model year | 2008 | 2008 |
| Body · drive | Pickup · 4-Wheel or All-Wheel Drive · Gas | Pickup · 4-Wheel or All-Wheel Drive · Gas |
| Combined MPG | 15 | 14 |
| City / highway MPG | 14 / 18 | 12 / 18 |
| Fuel a year | $4,450 | $5,850 |
| Tailpipe CO₂ (g/mi) | 592 | 635 |
| Engine | 4.3 L 6-cyl | 6.2 L 8-cyl |
| Transmission | Automatic 4-spd | Automatic 6-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.