2026 GMC Sierra 4WD (Flex Fuel)
17MPG
Combined
1
Trim
2026
Updated February 27, 2026
Looking at the 2026 GMC Sierra 4WD (Flex Fuel)? This Truck offers 17 combined MPG and comes with 1 available configurations. We break down the specs, safety data, and how it compares to the competition.
2026 GMC Sierra 4WD (Flex Fuel) Specifications
| Spec | Value |
|---|---|
| Combined MPG | 17 combined MPG |
| City MPG | 15 |
| Highway MPG | 19 |
| Body Style | Truck |
| Fuel Type | Flex Fuel |
| Drive | 4WD |
| Available Trims | 1 |
Annual Fuel Cost
Based on EPA estimates, the 2026 GMC Sierra 4WD (Flex Fuel) 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 (Flex Fuel)
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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