2026 Jeep Grand Cherokee L Engine Problems
- Complaints
- 20about this part
- Share
- 80%of 25 total for the year
- Median mileage
- —not reported
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 20 complaints about the engine of the 2026 Jeep Grand Cherokee L, 80% of the 25 complaints for this model year.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Sparl Plug recall on Jeep Grand Cherokee 2026 L Laredo 4x4. While driving my 2026 Jeep Grand Cherokee L Laredo 4x4, the vehicle occasionally jerks/shudders when I shift into Drive and begin moving. The vehicle feels sluggish and does not respond smoothly when accelerating. This has happened even after the vehicle has been running for several minutes. The vehicle is new, and I am concerned that this may be related to a powertrain or transmission problem.”
NHTSA complaint #11762146, filed 2026-09“I am reporting a serious safety concern with my 2026 Jeep Grand Cherokee L. The vehicle has emitted an audible warning, the engine has shut off while the vehicle was still moving, and the D drive indicator began flashing and automatically switches to P park. When this occurs, the vehicle loses propulsion and I am only able to coast to a stop. I then have to manually place the vehicle in Park and restart the engine before the transmission will operate normally again. …”
NHTSA complaint #11762444, filed 2026-09“I was stuck on the Hot way for 45 minutes cause my car was heating up. It’s been in shop four times for heating up on the fourth time I took it in. I was stocked because my electrical started going out. …”
NHTSA complaint #11752160, filed 2026-07“While driving from Tampa to Miramar Beach, Florida, the vehicle operated normally on the highway. However, shortly after exiting the highway and driving in slow traffic, the engine temperature gauge suddenly rose into the red zone, and the air conditioning automatically shut off. I immediately pulled over and allowed the vehicle to cool. The engine temperature returned to normal, and after the engine cooled completely, I found that the coolant reservoir level was only slightly below the MIN mark. …”
NHTSA complaint #11752766, filed 2026-07“On 7/16/2026 exactly 1 week after i purchase the vehicle after fueling i drove about 1 mile when the car started to misfire, when attempting to accelerate. Check engine light flashes a few times and then went off. I then attempted to reverse into my driveway and when attempting to do so the vehicle shut off completely. But started right back up. I then called the dealership and was asked to bring it in. The dealership has the vehicle about 2 days and said it has been repaired it had bad spark plugs. …”
NHTSA complaint #11754118, filed 2026-08Related service bulletins
- 11038640Oct 17, 2026Engine Coolant Leak The customer may comment on the following: SYMPTOM: ● There is an external coolant leak near the exhaust side of the engine block. This bulletin involves…
- 11038643Oct 14, 2026Revised Customer Satisfaction Notification 66D – Spark Plugs - Dealer Notification
- 11038554Oct 7, 2026Revised Customer Satisfaction Notification 66D – Spark Plugs - Dealer Notification
- 11038517Oct 7, 2026Revised Customer Satisfaction Notification 66D – Spark Plugs - Dealer Notification
- 11038310Sep 30, 2026Engine Runs Rough Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic…
- 11037570Sep 25, 2026Umbrella Valve Seal Missing From Cylinder Head Cover Vehicle may exhibit a MIL-ON. SYMPTOM: Upon inspection the technician may find that one or more of the following Diagnostic…
- 11036777Aug 25, 2026D-26-18 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D
- 11036776Aug 25, 2026ID-26-38 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D
- 11036775Aug 24, 2026Dealer Incentive for the Completion of Customer Satisfaction Notice (CSN) 66D
- 11036774Aug 24, 2026Dealer Incentive for the Completion of Customer Satisfaction Notice (CSN) 66D
Engine: other model years
Other parts of the 2026 Jeep Grand Cherokee L
7 complaintsFuel system
5 complaintsOther or unknown
5 complaintsForward collision avoidance
4 complaintsElectrical system
1 complaintsExterior lighting
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2026 Jeep Grand Cherokee L
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology