2026 Chevrolet Suburban 4WD vs 2026 GMC Sierra 4WD AT4X with Sport Mode
| EPA figure | 2026 Chevrolet Suburban 4WD | 2026 GMC Sierra 4WD AT4X with Sport Mode |
|---|---|---|
| Model year | 2026 | 2026 |
| Body · drive | SUV · 4-Wheel Drive · Diesel | Pickup · 4-Wheel Drive · Diesel |
| Combined MPG | 22 | 19 |
| City / highway MPG | 20 / 24 | 19 / 20 |
| Fuel a year | $4,350 | $5,050 |
| Tailpipe CO₂ (g/mi) | 460 | 524 |
| Engine | 3.0 L 6-cyl turbo | 3.0 L 6-cyl turbo |
| 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.