2020 head-to-head · Full-Size Pickup
2020 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.
The 2020 GMC Sierra is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $2,214 a year to fuel (21 MPG), versus $3,100 for the 2020 Toyota Tundra (15 MPG). That's roughly $886 a year, or about $4,429 over five years.
Your numbers
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Fuel cost over 10 years
- GMC Sierra
- Toyota Tundra
Side by side
| GMC Sierra | Toyota Tundra | |
|---|---|---|
| $2,214 | Your annual fuel cost | $3,100 |
| 21 MPG | Combined efficiency | 15 MPG |
| 20 MPG | City | 13 MPG |
| 23 MPG | Highway | 18 MPG |
| 421 g/mi | Tailpipe CO₂ (g/mi) | 595 g/mi |
| 4/10 | EPA fuel economy score | 2/10 |
| 4/10 | EPA greenhouse gas score | 2/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 2.7L 4-cyl turbo | Engine / motor | 5.7L 8-cyl |
| 8-speed automatic | Transmission | 6-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 16 2020 full-size pickups, the GMC Sierra ranks 8th and the Toyota Tundra 14th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2020 GMC Sierra or the 2020 Toyota Tundra?
Measured by cost to drive, the GMC Sierra. The GMC Sierra is rated 21 MPG combined and the Toyota Tundra 15 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 GMC Sierra vs. the Toyota Tundra per year?
At 15,000 miles a year with $3.10/gal regular gas, about $2,214 for the GMC Sierra and $3,100 for the Toyota Tundra.
GMC Sierra vs Toyota Tundra in other years
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