2026 head-to-head · Full-Size Pickup
2026 GMC Sierra vs Toyota Tundra
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.10/gal regular gas, the most efficient 2026 GMC Sierra (20 MPG) costs about $2,325 a year to fuel and the 2026 Toyota Tundra (20 MPG) about $2,325.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- GMC Sierra
- Toyota Tundra
Side by side
| GMC Sierra | Toyota Tundra | |
|---|---|---|
| $2,325 | Your annual fuel cost | $2,325 |
| 20 MPG | Combined efficiency | 20 MPG |
| 18 MPG | City | 18 MPG |
| 21 MPG | Highway | 23 MPG |
| 464 g/mi | Tailpipe CO₂ (g/mi) | 450 g/mi |
| 4/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 2.7L 4-cyl turbo | Engine / motor | 3.4L 6-cyl turbo |
| 8-speed automatic | Transmission | 10-speed automatic |
| RWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
GMC Sierra vs Toyota Tundra across model years
- GMC Sierra
- Toyota Tundra
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 21 2026 full-size pickups, the GMC Sierra ranks 17th and the Toyota Tundra 19th for lowest fuel cost.
Frequently asked questions
How much does it cost to fuel the 2026 GMC Sierra vs. the Toyota Tundra per year?
At 15,000 miles a year with $3.10/gal regular gas, about $2,325 for the GMC Sierra and $2,325 for the Toyota Tundra.
GMC Sierra vs Toyota Tundra in other years
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