2021 head-to-head · Full-Size Pickup
2021 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.
Part-time 4WD · 3.0L 6-cyl turbo · 10-speed automatic · 23 MPG
The 2021 GMC Sierra 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 $2,214 a year to fuel (21 MPG), versus $2,413 for the 2021 Ford F150 Diesel (23 MPG). That's roughly $199 a year, or about $994 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
- Ford F150 Diesel
- GMC Sierra
Side by side
| Ford F150 Diesel | GMC Sierra | |
|---|---|---|
| $2,413 | Your annual fuel cost | $2,214 |
| 23 MPG | Combined efficiency | 21 MPG |
| 20 MPG | City | 20 MPG |
| 27 MPG | Highway | 23 MPG |
| 446 g/mi | Tailpipe CO₂ (g/mi) | 421 g/mi |
| 4/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 4/10 |
| Diesel | Powertrain | Gas |
| Diesel | Fuel | Regular gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 2.7L 4-cyl turbo |
| 10-speed automatic | Transmission | 8-speed automatic |
| Part-time 4WD | 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 17 2021 full-size pickups, the Ford F150 Diesel ranks 14th and the GMC Sierra 8th for lowest fuel cost.
The powertrains differ: the Ford F150 Diesel is a diesel, while the GMC Sierra is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2021 Ford F150 Diesel or the 2021 GMC Sierra?
Measured by cost to drive, the GMC Sierra. The Ford F150 Diesel is rated 23 MPG combined and the GMC Sierra 21 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 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 $2,413 for the Ford F150 Diesel and $2,214 for the GMC Sierra.
Ford F150 Diesel vs GMC Sierra in other years
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