2021 head-to-head · Full-Size Pickup
2021 Chevrolet Silverado Diesel vs GMC Sierra Diesel
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 2021 Chevrolet Silverado Diesel is the cheaper one to run. Driving 15,000 miles a year with $3.70/gal diesel fuel, it costs about $2,056 a year to fuel (27 MPG), versus $2,135 for the 2021 GMC Sierra Diesel (26 MPG). That's roughly $79 a year, or about $395 over five years.
Your numbers
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Fuel cost over 10 years
- Chevrolet Silverado Diesel
- GMC Sierra Diesel
Side by side
| Chevrolet Silverado Diesel | GMC Sierra Diesel | |
|---|---|---|
| $2,056 | Your annual fuel cost | $2,135 |
| 27 MPG | Combined efficiency | 26 MPG |
| 23 MPG | City | 23 MPG |
| 33 MPG | Highway | 30 MPG |
| 383 g/mi | Tailpipe CO₂ (g/mi) | 392 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Diesel | Powertrain | Diesel |
| Diesel | Fuel | Diesel |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 10-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.
Chevrolet Silverado Diesel vs GMC Sierra Diesel across model years
- Chevrolet Silverado Diesel
- GMC Sierra Diesel
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 Chevrolet Silverado Diesel ranks 4th and the GMC Sierra Diesel 6th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2021 Chevrolet Silverado Diesel or the 2021 GMC Sierra Diesel?
Measured by cost to drive, the Chevrolet Silverado Diesel. The Chevrolet Silverado Diesel is rated 27 MPG combined and the GMC Sierra Diesel 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 Chevrolet Silverado Diesel vs. the GMC Sierra Diesel per year?
At 15,000 miles a year with $3.70/gal diesel fuel, about $2,056 for the Chevrolet Silverado Diesel and $2,135 for the GMC Sierra Diesel.
Chevrolet Silverado Diesel vs GMC Sierra Diesel in other years
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