2020 GMC Sierra 4WD vs 2020 GMC Sierra 4WD AT4
| EPA figure | 2020 GMC Sierra 4WD | 2020 GMC Sierra 4WD AT4 |
|---|---|---|
| Model year | 2020 | 2020 |
| Body · drive | Pickup · 4-Wheel Drive · Gas | Pickup · 4-Wheel Drive · Gas |
| Combined MPG | 20 | 17 |
| City / highway MPG | 19 / 22 | 15 / 19 |
| Fuel a year | $3,350 | $4,850 |
| Tailpipe CO₂ (g/mi) | 442 | 515 |
| Engine | 2.7 L 4-cyl turbo | 6.2 L 8-cyl |
| Transmission | Automatic 8-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.