2021 head-to-head · Full-Size Pickup
2021 Jeep Gladiator Diesel vs Nissan Frontier
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, the most efficient 2021 Jeep Gladiator Diesel (24 MPG) costs about $2,312 a year to fuel and the 2021 Nissan Frontier (20 MPG) about $2,325.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Jeep Gladiator Diesel
- Nissan Frontier
Side by side
| Jeep Gladiator Diesel | Nissan Frontier | |
|---|---|---|
| $2,312 | Your annual fuel cost | $2,325 |
| 24 MPG | Combined efficiency | 20 MPG |
| 22 MPG | City | 18 MPG |
| 28 MPG | Highway | 24 MPG |
| 423 g/mi | Tailpipe CO₂ (g/mi) | 445 g/mi |
| 5/10 | 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 | 3.8L 6-cyl |
| 8-speed automatic | Transmission | 9-speed automatic |
| 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.
Jeep Gladiator Diesel vs Nissan Frontier across model years
- Jeep Gladiator Diesel
- Nissan Frontier
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 Jeep Gladiator Diesel ranks 11th and the Nissan Frontier 12th for lowest fuel cost.
The powertrains differ: the Jeep Gladiator Diesel is a diesel, while the Nissan Frontier is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2021 Jeep Gladiator Diesel or the 2021 Nissan Frontier?
Measured by cost to drive, the Jeep Gladiator Diesel. The Jeep Gladiator Diesel is rated 24 MPG combined and the Nissan Frontier 20 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 Jeep Gladiator Diesel vs. the Nissan Frontier per year?
At 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, about $2,312 for the Jeep Gladiator Diesel and $2,325 for the Nissan Frontier.
Jeep Gladiator Diesel vs Nissan Frontier in other years
More 2021 comparisons
Jeep Gladiator Diesel vs…
Or compare the 2021 Jeep Gladiator Diesel with anything else: