2023 Jeep Grand Cherokee Fuel System Problems

Mileage when the problem started

Owner reports

Selected complaints filed with NHTSA by 2023 Jeep Grand Cherokee owners, lightly cleaned up (personal details are redacted by NHTSA).

The engine would randomly accelerate , rev and make a whining noise, slip into neutral and I would have to pull over and shut it off sometimes in an unsafe area. Occasionally when I would start the engine it would rev as though I had my foot on the gas and I would shut it back off. I was traveling on the highway approximately 70 mph and cancelled the cruise control to go around a curve and pressed on the gas to merge into 70 mph traffic on another highway, and nothing happened. When I got to the end of the ramp the car was going 32 mph with my foot to the floor on the gas panic stricken. Suddenly the gas engaged and I shot into the traffic trying to avoid me. I took the car home, parked it in the garage and called a local dealership for service explaining the problems I was having. I went to resume my trip in a friends car because I was frightened to drive mine. …

The contact owns a 2023 Jeep Grand Cherokee. The contact stated that while driving at various speeds, the vehicle hesitated. Additionally, while driving at slower speeds, the braking system independently engaged, and the vehicle came to a complete stop. The "Service Hybrid System" warning light illuminated. A dealer was contacted. The vehicle was taken to a dealer to be diagnosed; however, the diagnostic result was not provided. The vehicle was not repaired. The manufacturer was notified of the failure and opened a case. The approximate failure mileage was 18,000.

As noted on the IIHS.org website, 2022 and 2023 Jeep Grand Cherokee's built prior to April 2023 experienced a fuel tank rupture in the side impact test conducted by IIHS. Stellantis redesigned the underbody structure to correct this issue. This redesign was put in place on vehicles assembled after March 2023. IIHS originally tested a 2022 Jeep Grand Cherokee in October 2022 and identified the fuel tank rupture during the side impact test. However, IIHS did not post this information on their website until almost a year later when tests of the redesigned vehicle were performed, and the fuel tank leak issue had been corrected. …

When accelerating at highway speeds there is a significant power lag when the vehicle switches from between the internal combustion engine (ICE) and the electric motor causing deceleration in the vehicle. This is typically followed by a sudden surge in power causing rapid acceleration. This causes unpredictable speed and makes merging onto highway traffic difficult. When this issue occurs the "Service Hybrid Electric Vehicle System" warning lights illuminates. After several miles, the warning will turn off, but this occurs off and on when changing lanes, merging, or braking in heavy traffic. This typically only occurs at highway speeds when the vehicles transfers between ICE and Electric power frequently and has not been observed at normal city street speeds. …

Monday, November 3rd, 2025 In electric mode - I drove the vehicle forward out of a parking spot. The vehicle made three very large lurches over a 200 foot length of parking lot, enough to bang drivers and passengers heads hard against the head rests each with a loud clunk. Within seconds after the third lurch, the car went into gas/oil refresh mode (which transitions the vehicle from electric mode to gas mode). At that point the accelerator became unresponsive with RPMs hovering just over 1000. After multiple successive press, hold and releases of the accelerator, I took my foot off thinking I had lost all power and was preparing to shut the vehicle off. Before I could, the car began accelerating quickly forward without my foot on the accelerator. This lasted for 1 - 2 seconds before the car stopped accelerating and I was able to use the brakes to stop it. …

I am reporting a serious safety issue involving my 2023 Jeep Grand Cherokee hybrid. The vehicle has experienced repeated stalling and loss of propulsion while driving, including in active traffic and in a school pickup line. The vehicle has unexpectedly failed to accelerate or start, creating dangerous situations for myself, my passengers, and surrounding vehicles. The vehicle has stalled in traffic and at low speeds without warning. On multiple occasions, it lost propulsion while driving, requiring me to stop unexpectedly. One incident occurred in a school pickup line, causing traffic disruption and creating a safety risk with children present. In addition, the vehicle is subject to a high-voltage battery safety recall due to fire risk. I have been advised that the vehicle is unsafe to park in a garage, and I am concerned about the risk of fire. …

Loss of propulsion while driving Yes it is available for inspection upon request Complete and total loss of propulsion/acceleration when pressing on gas pedal while driving and going into a left turn across oncoming traffic; driver and five year old passenger in the vehicle at the time of incident. Safely maneuvered the vehicle to the side of the roadway. Dealership has not been able to recreate the problem. Vehicle has been at dealership service department since May 14, 2026, immediately after incident. Vehicle was able to be driven to dealership after incident. Incident reported to Stellantis May 28, 2026. Stated that the report would be escalated and I would be contacted via email in 1-2 business days. No direct manufacturer inspection at this time, and police/insurance company were not contacted as there was no accident to report. …

At the end of March 2026, the hybrid battery was replaced due to a recall by the dealership. After this, several software updates done, including the BCM, per technician's notes. In May 2026, my vehicle was found bricked in my driveway, unable to jump start, giving warnings regarding the dual charging system. After being towed to the dealership, they found my 12v battery was dead and stated that it needed to be replaced, which was done, with no further testing per technician's notes. Six weeks later, in July 2026, my vehicle was found bricked in my driveway again, giving the same warnings on the dashboard as it did in May. Once towed to the dealership again, with further parasitic testing, they found a "TSB about improper BCM software causing the 12v systems battery to be drained, as well as the kombi flickering which was also experienced while vehicle was in shop. …

CRITICAL VEHICLE SAFETY COMPLAINT - CHRONIC MULTI-SYSTEM DEFECTS The vehicle is a 2023 Jeep Grand Cherokee 4xe operating under severe chronic safety non-compliance. The vehicle has an active, un-remedied engine block casting sand contamination fire/loss of propulsion and crash risk (FCA 78C / NHTSA 25V-766) listing 'Parts Unavailable.' It also carries an open side-curtain airbag deployment failure recall (NHTSA 26V-328). Furthermore, the vehicle experiences intermittent climate control and HVAC failures where the heating, air conditioning, and windshield defroster loops completely disable while in motion on the highway. This directly mirrors the safety vulnerabilities detailed in federal recall 24V-111 (FCA 04B), where faulty hybrid control processor software leaves the front windshield defogger inoperable. …

- The high-voltage (HV) battery system and related hybrid control processor (HCP) software - repeatedly, across three separate incidents (Jan 2026 coolant heater/HCP fault, June 2026 front axle disconnect fault, Sept 2026 full HV battery replacement). Also affected: front axle disconnect actuator (drivetrain). Yes, available for inspection - vehicle is at Chrysler Dodge Jeep Ram of Clifton Park. - Recall 68C: HV battery fire risk (owners told not to charge, park away from structures). Recall 73C: possible loss of drive power while driving, increasing crash risk. Recall 20C: head restraints failing to lock, increasing injury risk in a crash. …

Fuel System complaints in other Grand Cherokee years