2026 GMC Sierra 4WD 6M
17MPG
Combined
1
Trim
2026
Updated February 27, 2026
Get the full picture on the 2026 GMC Sierra 4WD 6M. As a Truck, it achieves 17 combined MPG and has not yet been rated by NHTSA. Below you’ll find detailed specs for every trim, plus recall information and competitor comparisons.
2026 GMC Sierra 4WD 6M Specifications
| Spec | Value |
|---|---|
| Combined MPG | 17 combined MPG |
| City MPG | 17 |
| Highway MPG | 18 |
| Body Style | Truck |
| Fuel Type | Regular |
| Drive | 4WD |
| Available Trims | 1 |
Annual Fuel Cost
Based on EPA estimates, the 2026 GMC Sierra 4WD 6M costs approximately $2,600 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.
Compare the 2026 GMC Sierra 4WD 6M
See how it stacks up against similar vehicles:
- Chevrolet Colorado Zr2
- Chevrolet Silverado 4WD (Flex Fuel)
- Chevrolet Silverado Mud Terrain Tires 4WD (Flex Fuel)
Other Model Years
- 2026 (this page)
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