2018 Jeep Grand Cherokee power train problems

70 owner complaints filed with NHTSA name the power train on the 2018 Jeep Grand Cherokee — 8% of all complaints for this model year.

Power Train complaints

share of all complaints

23,753 mi

median reported incident mileage

7 / 1

crash / fire reports

What owners report

“On 5/72026@app 3:14pm after picking up one grandchild, and at a stop light on the way to p/u the other, the Jeep without warning just disengaged when the gas pedal was depressed, but to no avail. While frozen, the dashboard may have displayed something that was not noted in the panic to get the car…”
filed May 14, 2026
“Twice I have been driving on the highway at 60 mph and the transmission had suddenly shifted into low gear and subsequently went into limp mode. The dealer is unable to find an issue with the vehicle. There were no warning lights, before, during, or after. After I pulled onto the shoulder of the…”
filed Apr 25, 2026

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Power Liftgate Inoperative.
S2623000023 · Service Bulletin/Repair Instructions · issued Apr 8, 2026
The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may…
S2621000003 REV.A · Service Bulletin/Repair Instructions · issued Mar 9, 2026
Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
S2621000003 · Service Bulletin/Repair Instructions · issued Feb 25, 2026