2021 Jeep Gladiator fuel/propulsion system problems
20 owner complaints filed with NHTSA name the fuel/propulsion system on the 2021 Jeep Gladiator — 7% of all complaints for this model year.
What owners report
“Truck failed to find gear shuddered lost speed in traffic while going up a hill. Limp mode was initiated. This is a known manufacturers defect with a tsb applied against the known issue. Issue is widespread when researched but not made known by the manufacturer of the truck. Dealership refusing…”
filed Aug 11, 2026
“The vehicle was bought in CA and hasn't had any issues till about after 3-4 yrs later. 1) Adaptive cruise control / emergency braking system / forward collision notification will occassionally state "not availble/unavailable" or "visibility" is not available and to clean windshield, but the…”
filed Jul 11, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Gladiator years
| Year | Reports | Share |
|---|---|---|
| 2023 Gladiator | 8 | 14% |
| 2022 Gladiator | 8 | 7% |
| 2020 Gladiator | 9 | 2% |
Other reported problem areas on the 2021 Jeep Gladiator
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.