2018 head-to-head · Full-Size Pickup
2018 Ford F150 Diesel vs GMC Sierra
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 Ford F150 Diesel is the cheaper one to run. Driving 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, it costs about $2,220 a year to fuel (25 MPG), versus $2,325 for the 2018 GMC Sierra (20 MPG). That's roughly $105 a year, or about $525 over five years.
Your numbers
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Fuel cost over 10 years
- Ford F150 Diesel
- GMC Sierra
Side by side
| Ford F150 Diesel | GMC Sierra | |
|---|---|---|
| $2,220 | Your annual fuel cost | $2,325 |
| 25 MPG | Combined efficiency | 20 MPG |
| 22 MPG | City | 18 MPG |
| 30 MPG | Highway | 24 MPG |
| 412 g/mi | Tailpipe CO₂ (g/mi) | 448 g/mi |
| 5/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 4/10 |
| Diesel | Powertrain | Flex-fuel |
| Diesel | Fuel | Regular gasoline or E85 |
| 3.0L 6-cyl turbo | Engine / motor | 4.3L 6-cyl |
| 10-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.
Ford F150 Diesel vs GMC Sierra across model years
- Ford F150 Diesel
- GMC Sierra
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 Ford F150 Diesel ranks 3rd and the GMC Sierra 4th for lowest fuel cost.
The powertrains differ: the Ford F150 Diesel is a diesel, while the GMC Sierra is a flex-fuel model.
Frequently asked questions
Which is more fuel-efficient, the 2018 Ford F150 Diesel or the 2018 GMC Sierra?
Measured by cost to drive, the Ford F150 Diesel. The Ford F150 Diesel is rated 25 MPG combined and the GMC Sierra 20 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Ford F150 Diesel vs. the GMC Sierra per year?
At 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, about $2,220 for the Ford F150 Diesel and $2,325 for the GMC Sierra.
Ford F150 Diesel vs GMC Sierra in other years
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