2020 Jeep Gladiator MPG and Fuel Cost
The 2020 Jeep Gladiator is rated 19 mpg combined in every gas version EPA tested.
EPA fuel economy
2020 Jeep Gladiator · 2 EPA-tested versionsBest EPA rating
19MPG combined
16 city 23 highway
$3,300 a year to fuel
3.6L 6-cyl · 4WD · 6-speed manual
Best version costs $5,500 more in fuel over 5 years vs the average new vehicle (EPA)
Fuel cost: 15,000 miles a year at EPA's $4.00 a gallon (regular gas).
At EPA's price assumptions, fuel costs about $3,300 a year.
More complaints than most Gladiator years
The 2020 drew 215 owner complaints in its first three years, against about 116 for a typical Gladiator year: 1.8 times as many. It is not a year to avoid, which takes at least twice the typical count and at least 50 complaints.
No Gladiator year stands out enough to avoid. Based on owner complaints, not adjusted for sales.
Every Gladiator year rankedThe 2020 Gladiator's recalls and problems
Every 2020 Gladiator version
EPA's ratings for each version it tested. Fuel cost is EPA's estimate for 15,000 miles a year at its current prices.
| Version | Combined | City / Hwy | Fuel / year |
|---|---|---|---|
3.6L 6-cyl · 4WD · 6-speed manual Best
EPA listing: Gladiator Pickup 4WD |
19 mpg | 16 / 23 | $3,300 |
3.6L 6-cyl · 4WD · 8-speed automatic
EPA listing: Gladiator Pickup 4WD |
19 mpg | 17 / 22 | $3,300 |
Fuel cost at your prices
EPA's annual cost uses 15,000 miles a year, 55% city driving and its current prices: $4.00 a gallon for regular gas. Change the numbers to match your driving.
| Version | Per year | 5 years |
|---|---|---|
3.6L 6-cyl · 4WD · 6-speed manual | $3,158 | $15,789 |
3.6L 6-cyl · 4WD · 8-speed automatic | $3,158 | $15,789 |
At the default settings the results match EPA's annual cost before EPA rounds it to the nearest $50.
Jeep Gladiator MPG by model year
The best-rated version in each model year; the highlighted year is this page. Gas: 19 mpg (every year from 2020 to 2026). Diesel: 24 mpg (2021 to 2023).
- Best gas version
- Best diesel version
2020: gas 19 mpg · diesel not offeredTap or drag across the chart for other years.
Show as a table
| Model year | Best gas version | Best diesel version |
|---|---|---|
| 2020 | 19 | – |
| 2021 | 19 | 24 |
| 2022 | 19 | 24 |
| 2023 | 19 | 24 |
| 2024 | 19 | – |
| 2025 | 19 | – |
| 2026 | 19 | – |
Every Gladiator year's ratings in one table
How the 2020 Gladiator compares
2020 midsize pickups covered on this site, ranked by their best combined rating. Fuel cost is for each model's cheapest version to run, at EPA's prices.
| 2020 model | Best combined | Best gas | Fuel / year |
|---|---|---|---|
Best: diesel |
23 mpg | 22 mpg | $2,850 |
Best: gas |
23 mpg | 23 mpg | $2,700 |
Best: gas |
22 mpg | 22 mpg | $2,850 |
Best: gas |
21 mpg | 21 mpg | $2,950 |
Best: gas |
20 mpg | 20 mpg | $3,100 |
Jeep Gladiator This page Best: gas |
19 mpg | 19 mpg | $3,300 |
2020 Gladiator recalls and complaints
Questions
Does the 2020 Jeep Gladiator need premium gas?
No. EPA lists every 2020 Jeep Gladiator version on regular gasoline.
Sources and method
- US EPA and Department of Energy fuel economy data (fueleconomy.gov), file dated Nov 4, 2026.
- EPA fuel price assumptions: regular $4.00, midgrade $4.61, premium $5.01, diesel $6.13 a gallon; electricity $0.15 per kWh.
- Recall and complaint counts: NHTSA recall file dated Nov 12, 2026 and complaint file dated Nov 11, 2026.
Ratings are EPA estimates. Real-world mileage depends on how, where and in what weather you drive. How we build these pages. Spotted an error? Tell us.