2021 GMC Sierra 2WD vs 2021 GMC Sierra 4WD
| EPA figure | 2021 GMC Sierra 2WD | 2021 GMC Sierra 4WD |
|---|---|---|
| Model year | 2021 | 2021 |
| Body · drive | Pickup · Rear-Wheel Drive · Diesel | Pickup · 4-Wheel Drive · Gas |
| Combined MPG | 26 | 17 |
| City / highway MPG | 23 / 30 | 16 / 20 |
| Fuel a year | $3,700 | $4,850 |
| Tailpipe CO₂ (g/mi) | 392 | 510 |
| Engine | 3.0 L 6-cyl turbo | 6.2 L 8-cyl |
| Transmission | Automatic 10-spd | Automatic 10-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.