2026 GMC Sierra 4WD with Sport Mode vs 2026 GMC Yukon XL 2WD
| EPA figure | 2026 GMC Sierra 4WD with Sport Mode | 2026 GMC Yukon XL 2WD |
|---|---|---|
| Model year | 2026 | 2026 |
| Body · drive | Pickup · 4-Wheel Drive · Diesel | SUV · Rear-Wheel Drive · Diesel |
| Combined MPG | 24 | 23 |
| City / highway MPG | 22 / 26 | 21 / 26 |
| Fuel a year | $4,000 | $4,150 |
| Tailpipe CO₂ (g/mi) | 428 | 442 |
| 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.