2026 GMC Sierra 4WD AT4X vs 2026 GMC Sierra Mud Terrain Tires 4WD (Sport Mode)
2026 GMC Sierra 4WD AT4X
Open its page → 2026 GMC Sierra Mud Terrain Tires 4WD (Sport Mode)
Open its page →| EPA figure | 2026 GMC Sierra 4WD AT4X | 2026 GMC Sierra Mud Terrain Tires 4WD (Sport Mode) |
|---|---|---|
| Model year | 2026 | 2026 |
| Body · drive | Pickup · 4-Wheel Drive · Gas | Pickup · 4-Wheel Drive · Gas |
| Combined MPG | 15 | 16 |
| City / highway MPG | 14 / 16 | 15 / 18 |
| Fuel a year | $5,500 | $4,200 |
| Tailpipe CO₂ (g/mi) | 601 | 561 |
| Engine | 6.2 L 8-cyl | 5.3 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.