Against 247 other V6 cars rated 2024–2026, the Gladiator trails their 21 mpg average by 2 mpg, about $192 a year. Averaged over the years each was sold, the most economical engine since 2020, the 3L 6-cyl (2021–2023), does 24 mpg and the thirstiest, the 3.6L 6-cyl (2020–2026), 19: $421 a year apart.
Every Jeep Gladiator engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 3L 6-cyl | 22 / 28 | 2021–2023 | $1,600 | |
| 3.6L 6-cyl | 17 / 22 | 2020–2026 | $2,021 |
What that actually costs
Against its rivals in the same model years, the Chevrolet Silverado gets 21 mpg, the GMC Sierra 21 mpg and the Toyota Tundra 21 mpg, next to 19 mpg for the 2026 Gladiator. The Gladiator costs the most of them to run: $192 a year more than the Chevrolet Silverado.
| Measure | Value |
|---|---|
| Cost per mile (2026) | $0.168 |
| Fuel per year | $2,021 |
| Fuel over five years | $10,105 |
| Against other V6 cars, 2024–2026 | +$192 a year |
| EPA's own estimate | $3,279 a year |
City or highway — who is this car for
The 2026 Jeep Gladiator gives up 5 mpg in town: 22 on the highway against 17 in the city, $514 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2026) | 17 mpg | $2,259 a year if you only drive in town |
| Highway | 22 mpg | $1,745 a year if you mostly commute |
| Gap | +5 mpg (29%) | Typical for its type |
How the Gladiator changed over the years
The Gladiator peaked in 2023 at 24 mpg (22 city, 28 highway) and was at its thirstiest in 2026 at 19 — 5 mpg apart, or $421 a year in fuel between buying one year and the other. The 2026 car does 19. The biggest single-year change came in 2024: 24 to 19 mpg.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2026 | 17 / 22 | 1 | $2,021 | |
| 2025 | 17 / 22 | 1 | $2,021 | |
| 2024 | 17 / 22 | 1 | $2,021 | |
| 2023 | 22 / 28 | 1 | $1,600 | |
| 2022 | 22 / 28 | 1 | $1,600 | |
| 2021 | 22 / 28 | 1 | $1,600 | |
| 2020 | 17 / 22 | 1 | $2,021 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 7 EPA ratings of the Jeep Gladiator — 2 engines across 2020–2026. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $3,279. Full method.
Frequently asked questions
What mpg does the 2026 Jeep Gladiator get?
19 mpg combined, 17 city and 22 highway, per EPA. Across every year since 2020 the Gladiator has averaged 21.1 mpg.
Is the 2026 Gladiator more efficient than the 2025?
About the same: 19 against 19 mpg combined.
Which Gladiator year has the best gas mileage?
The 2023, at 24 mpg combined (22 city, 28 highway).
Does the Gladiator get better gas mileage than the Chevrolet Silverado?
No: 19 mpg for the 2026 Gladiator against 21 for the 2026 Chevrolet Silverado, about $192 a year more to run.
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