2018 head-to-head · Full-Size Pickup
2018 GMC Sierra vs Roush Performance F150
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 2018 GMC Sierra is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas and $3.95/gal premium gas, it costs about $2,325 a year to fuel (20 MPG), versus $4,938 for the 2018 Roush Performance F150 (12 MPG). That's roughly $2,612 a year, or about $13,062 over five years.
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
- Roush Performance F150
Side by side
| GMC Sierra | Roush Performance F150 | |
|---|---|---|
| $2,325 | Your annual fuel cost | $4,938 |
| 20 MPG | Combined efficiency | 12 MPG |
| 18 MPG | City | 11 MPG |
| 24 MPG | Highway | 15 MPG |
| 448 g/mi | Tailpipe CO₂ (g/mi) | 732 g/mi |
| 4/10 | EPA fuel economy score | 1/10 |
| 4/10 | EPA greenhouse gas score | 1/10 |
| Flex-fuel | Powertrain | Gas |
| Regular gasoline or E85 | Fuel | Premium gasoline |
| 4.3L 6-cyl | Engine / motor | 5.0L 8-cyl supercharged |
| 6-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 Roush Performance F150 across model years
- GMC Sierra
- Roush Performance F150
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 12 2018 full-size pickups, the GMC Sierra ranks 4th and the Roush Performance F150 12th for lowest fuel cost.
The powertrains differ: the GMC Sierra is a flex-fuel model, while the Roush Performance F150 is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2018 GMC Sierra or the 2018 Roush Performance F150?
Measured by cost to drive, the GMC Sierra. The GMC Sierra is rated 20 MPG combined and the Roush Performance F150 12 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 GMC Sierra vs. the Roush Performance F150 per year?
At 15,000 miles a year with $3.10/gal regular gas and $3.95/gal premium gas, about $2,325 for the GMC Sierra and $4,938 for the Roush Performance F150.
GMC Sierra vs Roush Performance F150 in other years
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