Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2021 Jeep Gladiator owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2021 Jeep Gladiator. The contact received notification of NHTSA Campaign Number: 22V767000 (Fuel System, Gasoline, Engine) however, the part to do the recall repair was not yet available. An undisclosed dealer was contacted and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that on two separate occasions while driving approximately 60-75 MPH, the vehicle inadvertently decelerated while the accelerator pedal was depressed. No warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the high-pressure fuel pump had failed and needed to be replaced. The vehicle was not repaired. …
The contact owns a 2021 Jeep Gladiator. The contact stated while driving at various speeds, she noticed an abnormal clicking sound coming from the rear of the vehicle and the vehicle failed to accelerate as needed. The contact also stated that she had received several messages from Uconnect indicating a Power System failure. The vehicle was taken to the dealer where it was diagnosed that the failure was associated with the parking brake due to unknown components being detached and hanging underneath the vehicle. The dealer repaired the parking brake; however, the failure persisted. The vehicle was not repaired. Additionally, the contact received notification of NHTSA Campaign Number: 22V767000 (Fuel System, Gasoline, Engine). The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. …
The contact owns a 2021 Jeep Gladiator. The contact received notification of NHTSA Campaign Number: 22V767000 (Fuel System, Gasoline, Engine) however, the part to do the recall repair was unavailable. The contact stated while driving approximately 60 MPH, the vehicle started losing motive power, and then after a minute the vehicle functioned normally. The contact stated that there was no warning light illuminated. The contact stated that the failure was intermittent. The dealer was contacted to have the vehicle diagnosed and repaired; however, the dealer advised that the failure could be related to NHTSA Campaign Number: 22V767000 (Fuel System, Gasoline, Engine) however, the part was not yet available. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. …
The contact owns a 2021 Jeep Gladiator. The contact stated while driving approximately 55 MPH, the vehicle stalled. The contact depressed the accelerator pedal and the vehicle failed to respond. The contact stated that the power steering and brakes were still operational. The contact stated no warning light was illuminated. The contact coasted the vehicle off the roadway and attempted to restart the vehicle; however, the vehicle failed to restart. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the fuel pump had failed and needed to be replaced. The vehicle had been repaired. The contact had researched online and related the failure to NHTSA Campaign Number: 23V263000 (Fuel System, Diesel). The failure mileage was approximately 50,000.
The contact owns a 2021 Jeep Gladiator. The contact received notification of NHTSA Campaign Number: 22V767000 (Fuel System, Gasoline, Engine) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. While the contact was driving at approximately 35 MPH, the vehicle made an abnormal sound in the engine compartment and then stalled. The vehicle was towed to a dealer and diagnosed with fuel pump failure. The failure mileage was approximately 46,000. Parts distribution disconnect.
The contact owns a 2021 Jeep Gladiator. The contact stated while driving 65 MPH, the DEF tank message was displayed, notifying the contact to "See the Dealer". Additionally, there was a message indicating 200 miles were remaining before the vehicle would fail to start. The vehicle was taken to the local dealer, where it was diagnosed and determined that the tank and sensor needed to be replaced; however, the parts were on backorder. The vehicle was not repaired. The manufacturer was contacted, but no additional assistance was provided. The failure mileage was approximately 165.
The contact owns a 2021 Jeep Gladiator. The contact stated that while attempting to start the vehicle, the vehicle would hesitate to start. There were no warning lights illuminated. The vehicle was taken to a local dealer, where it was diagnosed that the fuel pump, the fuel injectors, and the fuel filter, were faulty and needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number : 23V263000 (Fuel System, Diesel). The manufacturer was notified of the failure. The failure mileage was approximately 40,000.
The vehicle auto stops when the steering wheel is turned, in direct conflict with owner's manual. The owner's manual specifies that "Steering angle beyond threshold" will prevent an auto stop, but preventing the auto stop is the opposite of initiating the event. Furthermore, the instrument cluster never presents a "STOP/START READY" message which is the first necessary condition for an auto stop. This issue creates a serious safety hazard, as the vehicle presents incorrect information to the driver and the vehicle unexpectedly stops in traffic which confuses and distracts the driver. The unexpected / wanted stop in heavy traffic could cause a rear-end collision leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel, who expressed safety concerns. …
The vehicle auto stops when the defrost is turned off, in direct conflict with owner's manual. The owner's manual specifies that "HVAC is set to full defrost mode" will prevent an auto stop, but preventing the auto stop is the opposite of initiating the event. Additionally, this issue occurs when the HVAC is operating at less than full defrost mode. Furthermore, the instrument cluster never presents a "STOP/START READY" message which is the first necessary condition for an auto stop. This issue creates a serious safety hazard, as the vehicle presents incorrect information to the driver and the vehicle unexpectedly stops in traffic which confuses and distracts the driver. The unexpected / wanted stop in heavy traffic could cause a rear-end collision leading to serious injury or death. …
The vehicle auto starts when the defrost is turned on below the max or full setting. The owner's manual specifies that "the engine will start automatically when" the "HVAC is set to full defrost mode". The vehicle is operating in direct conflict with owner's manual. This auto start issue poses a serious safety hazard as the vehicle will unexpectedly start and may begin to roll when the driver is not ready. Additionally, if someone is operating on or under the vehicle, it will result in a serious injury or the loss of a finger when the vehicle auto starts in violation of the driver's intent. The unexpected / wanted start could cause a collision with another vehicle or pedestrian leading to serious injury or death. The malfunction was reproduced and confirmed by multiple service personnel, who expressed safety concerns. …
Related recalls
Fuel system, diesel › Delivery › Fuel pump
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Wrangler, Gladiator, and 2022-2023 Ram 1500 vehicles equipped with a 3.0L diesel engine. The high pressure fuel pump (HPFP) may fail.
Remedy: Dealers will replace the HPFP and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023.
NHTSA investigations
High pressure fuel pump failure
The Office of Defects Investigation (ODI) opened PE21-021 on October 14, 2021, to investigate incidents alleging a stall/loss of motive power as a result of high-pressure fuel pump failures in certain model year (MY) 2019-2020 Ram 2500, 3500, 4500, and 5500 heavy duty trucks equipped with 6.7L Cummins turbodiesel engines.
Fuel System complaints in other Gladiator years
Frequently asked questions
How common are fuel system problems on the 2021 Jeep Gladiator?
NHTSA has 33 complaints about the fuel & propulsion system of the 2021 Jeep Gladiator, 11% of the model year's 292 complaints. The component named most often is delivery › fuel pump (1 mentions).
Is there a recall for 2021 Jeep Gladiator fuel system problems?
Yes — NHTSA recall 23V-263 (fuel pump, Apr 13, 2023). Recall repairs are free at authorized dealers.
At what mileage do 2021 Jeep Gladiator fuel system problems start?
Half of the complaints with a recorded mileage happened before about 26,000 miles, and 43% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.