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 stated that while driving at 60 MPH, there was an alarming amount of white smoke emanating from the engine compartment and permeating the interior of the vehicle, prompting the contact to pull over to the shoulder of the roadway and evacuate the vehicle. Moments later, the entire front of the vehicle was completely engulfed in flames. Local Emergency Services arrived on the scene and were able to extinguish the fire. During the failure several unknown warning lights were illuminated. The vehicle was towed to the residence and deemed a total loss by the Insurance provider. A fire report was filed and preliminary findings on the potential cause of the fire were provided but the contact was unaware of the cause. A Police report was filed, and injuries were reported. …
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. …
Under heavy breaking the rear wheels of my vehicle lifted off of the pavement. This loss of traction and shift in weight resulted in a head on collision with a vehicle in the opposite lane of traffic. After the accident I discover that the suspension for my vehicle was incorrect to the level that FCA released a TSB regarding the issue. The suspension that was equipped with the vehicle was designed for the gasoline motor and the weight associated with that motor. My vehicle has the diesel motor (approximately 600lbs heavier) along with factory equipped steel bumpers adding additional weight. This factory design failure created a vehicle that could not perform as designed and as I found out via an automotive accident, a vehicle that under heavy breaking can lift its rear wheels off of the ground.
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 that while driving at an undisclosed speed, the vehicle made abnormal sounds. The vehicle was taken to the dealer and was test-driven; however, the dealer refused to diagnose the vehicle while it was covered under warranty. The vehicle was then taken to an independent mechanic, who diagnosed the vehicle and determined that the camshaft had failed, and the engine oil cooler housing needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 25,000.
The contact owns a 2021 Jeep Gladiator. The contact stated that while operating the vehicle a valve knocking noise was present coming from the engine compartment, the check engine light had illuminated and the vehicle would not properly accelerate. The contact received codes that indicated an engine misfired in cylinder three and cylinder five. The vehicle was taken to the local dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failures. The failure mileage was 98,000.
The vehicle auto stops when putting on the driver's seat belt, in direct conflict with owner's manual. The owner's manual specifies that if the "Driver's seat belt is not buckled" it will prevent an auto stop, but preventing the auto stop is the opposite of the act of buckling the seat belt initiating the auto stop. Furthermore, the instrument cluster does not present 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 factually incorrect information to the driver and the vehicle unexpectedly stops creating driver confusion and distraction. Additionally, this creates a serious safety hazard as the issue inhibits the driver from attempting to flee an emergency situation, wherein the driver hops into an idling vehicle, plugs in their seat belt, and the vehicle turns itself off. …
The vehicle auto stops when turning down or turning off the climate controls, in direct conflict with owner's manual. This condition is not listed as one of the three conditions to activate an auto stop in the owner's manual. This condition is also not listed as one of the conditions that will inhibit the vehicle from an auto stop in the owner's manual. 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. …
Related recalls
Engine
Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, causing an engine stall.
Remedy: Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023.
Engine complaints in other Gladiator years
Frequently asked questions
How common are engine problems on the 2021 Jeep Gladiator?
NHTSA has 54 complaints about the engine & cooling of the 2021 Jeep Gladiator, 18% of the model year's 292 complaints.
Is there a recall for 2021 Jeep Gladiator engine problems?
Yes — NHTSA recall 22V-767 (engine, Oct 13, 2022). Recall repairs are free at authorized dealers.
At what mileage do 2021 Jeep Gladiator engine problems start?
Half of the complaints with a recorded mileage happened before about 25,000 miles, and 50% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 2 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
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.