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2026 Jeep Gladiator Mojave X Whitecap (JT)
Shown: 2026 Jeep Gladiator Mojave X Whitecap (JT). Photo: Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
  • Gas
  • Standard pickups
  • MY2021–2027

Jeep Gladiator MPG & Fuel Cost by Year

7 model years · 2021–2027

19 MPG
Combined
17 MPG
City
22 MPG
Highway
Annual cost · MY2027 Gladiator 3.6L 6-cyl 4WD
$3,420

15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)

All Jeep models

Jeep Gladiator fuel economy at a glance

EPA has rated the Jeep Gladiator for 7 model years, 2021 to 2027. Across those years its combined rating runs 18–24 MPG. The latest model year, 2027, has 1 configuration rated 19 MPG combined and costing $3,420 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2021 is the 2023 EcoDiesel 3.0L 6-cyl turbo 4WD, at 24 MPG. Model year 2027 is still being filled in by EPA, so its row may gain configurations.

Jeep Gladiator MPG by year

18202224 20212027 Gas Diesel 18202224 20212027 Gas Diesel
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Jeep Gladiator: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG)Diesel (MPG) $/yr
2021-2027* (JT) Generation page
2027 (partial) 19— $3,420
2026 19— $3,450
2025 19— $3,420
2024 18–19— $3,420–$3,670
2023 1924 $3,420–$3,930
2022 1924 $3,420–$3,930
2021 1924 $3,420–$3,930

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Jeep Gladiator generations

1 generations between 2021 and 2027. Open one for the table of every model year and configuration.

2027 powertrain options

Gas · 3.6L
Combined
19 MPG
Per year
$3,420
See gas configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · regular gasoline $4.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Jeep Gladiator's gas mileage by year?

EPA combined ratings for the Jeep Gladiator run 18–24 MPG across model years 2021 to 2027. The latest year, 2027, is rated 19 MPG.

Which Jeep Gladiator model year has the best gas mileage?

The 2023 Jeep Gladiator EcoDiesel 3.0L 6-cyl turbo 4WD has the highest combined rating since 2021, at 24 MPG.

How much does a Jeep Gladiator cost to fuel per year?

For MY2027, EPA-rated configurations cost $3,420 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $3,420.

Has the Jeep Gladiator's fuel economy improved over time?

No. The most efficient configuration moved from 24 MPG in 2021 to 19 MPG in 2027, 5 MPG less.

Which Jeep Gladiator model years have the same ratings?

EPA lists identical ratings as the previous year for 2023. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.