2026 Jeep Grand Cherokee Problems

I am reporting recurring safety defects in our 2026 Jeep Grand Cherokee Limited Reserve, delivered XXX. Since delivery, it has exhibited severe bucking, jerking, rough running, unexpected surging, hesitation, and failure to accelerate when I press the accelerator. Before delivery, [XXX] Jeep replaced four main-chamber spark plugs on XXX, at only 4 miles (RO #104686). At approximately 1,400 miles, Douglas Jeep found excessive oil or unburned fuel on the plugs and replaced all eight (RO #XXX), without explaining or correcting the underlying cause. On XXX, at approximately 1,181 miles, the engine stalled completely after a jolt shifting from reverse to drive. On XXX, it nearly stalled at 25–30 mph near [XXX] and [XXX] with our granddaughter aboard. On XXX, it nearly stalled at approximately 45 mph on [XXX]. On XXX, at approximately 60 mph, it hesitated sharply and jolted, feeling as if it might stall. Also on XXX, in approximately five miles of stop-and-go traffic moving 5–10 mph, it repeatedly bucked, jerked, surged, and failed to accelerate normally, bringing us dangerously close to vehicles ahead. Forceful jolts pushed us hard against our seats. The Jeep was at Douglas Jeep XXX . The symptoms persisted after repair. On XXX, its service order recorded “chug and buck,” with no correction available. On XXX, the service director attributed the behavior to “atypical throttle engagement,” although incidents continue. The SOS/ASSIST system also repeatedly fails to connect; on XXX it displayed “Feature not active,” and the sheriff’s department contacted us about 15 minutes later. These frequent failures could leave us unable to summon help after a crash or breakdown. We request NHTSA investigate possible engine/powertrain defects, repeated plug fouling, stalling/loss of propulsion, and emergency-call failures. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While driving the vehicle, it completely shuts down unexpectedly. This issue is not related to the auto-start functionality. When the vehicle dies, it goes completely dead. The first time it happened, it restarted on its own but shifted into park and activated the emergency brake. During the next two occurrences, the vehicle also shut off, and I had to manually restart it. No warnings or anything; it just completely goes dead. This puts me and my family at risk. The car can shut down on a major highway suddenly, causing a multi-car accident or, worse, a fatality. The vehicle has been to the dealership (Chrysler) the first time I was told its because my battery is dead, but since I am below 80%, Chrysler will not replace the battery so the batteries were recharged however I was told I will be back for replacement batteries eventually. The second time, the technican drove the car home (it stayed over night) and the car shut down on him while he was driving also. Chrysler says this only happens when I jump start my car and its not a manufacture issue. The result in this visit is my engine blown a 150v bold (something) and this is causing the shut off. Chrysler refused to fix saying Its not including in warrent since I only have 7k miles. The dealership took the cost and repaired the car. The third time it happened, Im still waiting for the dealership. I have not taken the car for the third incident. This issue has been confirmed by the dealership (seen twice ) and the manufactor (Chrysler)

I am reporting recurring safety defects in our 2026 Jeep Grand Cherokee Limited Reserve, delivered XXX. Since delivery, it has exhibited severe bucking, jerking, rough running, unexpected surging, hesitation, and failure to accelerate when I press the accelerator. Before delivery, [XXX] Jeep replaced four main-chamber spark plugs on XXX, at only 4 miles (RO #104686). At approximately 1,400 miles, Douglas Jeep found excessive oil or unburned fuel on the plugs and replaced all eight (RO #XXX), without explaining or correcting the underlying cause. On XXX, at approximately 1,181 miles, the engine stalled completely after a jolt shifting from reverse to drive. On XXX, it nearly stalled at 25–30 mph near [XXX] and [XXX] with our granddaughter aboard. On XXX, it nearly stalled at approximately 45 mph on [XXX]. On XXX, at approximately 60 mph, it hesitated sharply and jolted, feeling as if it might stall. Also on XXX, in approximately five miles of stop-and-go traffic moving 5–10 mph, it repeatedly bucked, jerked, surged, and failed to accelerate normally, bringing us dangerously close to vehicles ahead. Forceful jolts pushed us hard against our seats. The Jeep was at Douglas Jeep XXX . The symptoms persisted after repair. On XXX, its service order recorded “chug and buck,” with no correction available. On XXX, the service director attributed the behavior to “atypical throttle engagement,” although incidents continue. The SOS/ASSIST system also repeatedly fails to connect; on XXX it displayed “Feature not active,” and the sheriff’s department contacted us about 15 minutes later. These frequent failures could leave us unable to summon help after a crash or breakdown. We request NHTSA investigate possible engine/powertrain defects, repeated plug fouling, stalling/loss of propulsion, and emergency-call failures. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Since car was 2 days old, you would have to stop short of a stop sign or parking spot because the transmission would lunge up to 30 feet. Then once that happened, you could pull up to the stop or parking spot or whatever. Took it to the dealership and they acted like I was nuts. Got bad enough at 4900 mi, I told the service manager to drive it home. She called me and said it needed a new transmission and had put in with Jeep for a replacement. Jeep was contacted and they offered to replace the car under a trade in assistance program. Replacement car was found and at last possible minute, they cancelled the assistance. Went to dealership with my car and was told the factory engineer went to another dealership and that transmission also slipped and mis shifted. Told tech to open a 2nd star case about the engineering defect. Car is still at dealership. This is a safety issue with no answer. I have a disability and do not know what kind of stop to expect. Stellantis case 98378921 Star case They refused to give me number.

While driving the vehicle, it completely shuts down unexpectedly. This issue is not related to the auto-start functionality. When the vehicle dies, it goes completely dead. The first time it happened, it restarted on its own but shifted into park and activated the emergency brake. During the next two occurrences, the vehicle also shut off, and I had to manually restart it. No warnings or anything; it just completely goes dead. This puts me and my family at risk. The car can shut down on a major highway suddenly, causing a multi-car accident or, worse, a fatality. The vehicle has been to the dealership (Chrysler) the first time I was told its because my battery is dead, but since I am below 80%, Chrysler will not replace the battery so the batteries were recharged however I was told I will be back for replacement batteries eventually. The second time, the technican drove the car home (it stayed over night) and the car shut down on him while he was driving also. Chrysler says this only happens when I jump start my car and its not a manufacture issue. The result in this visit is my engine blown a 150v bold (something) and this is causing the shut off. Chrysler refused to fix saying Its not including in warrent since I only have 7k miles. The dealership took the cost and repaired the car. The third time it happened, Im still waiting for the dealership. I have not taken the car for the third incident. This issue has been confirmed by the dealership (seen twice ) and the manufactor (Chrysler)

The contact owns a 2026 Jeep Grand Cherokee. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the vehicle with the RPM elevated. The vehicle was driven to the shoulder of the road where the failure persisted. The vehicle was turned off. The vehicle was restarted. The vehicle was taken to the dealer; however, the failure was not duplicated. The dealer informed the contact to retrieve the vehicle. The contact later discovered that prior to the purchase, there were several repairs performed on the vehicle; however, the contact was not notified of the repairs. The manufacturer was contacted, and a case was filed. The contact stated that an initial case was filed and the case was escalated. The failure mileage was approximately 2,000.

driving down the road at any speed, the jeep will stop on a dime like you applied the full brake and shut off. i this has occurred 4 different time almost causing 2 bad accidents, one involving an unloaded log truck on hwy 130 in nc and the other one on hwy 544 in sc. The other two were while trying to accelerate out onto the rd. All this occurs without any warning. The engine will race quickly up to 35mph making rpm go to 7, the dash will go completely red when pulling off at red lights. I refuse to drive it thru a small town where people cross at, Jeep has been reported back to dealerships for all the same reoccurring problems since 130 miles.. Spark plugs replaced 2, elec parts been replaced , nothing is fixing the problem. MB Jeep is where i purchased the Jeep. Will not hold a speed, it will control speed itself. I took it back Saturday to dealership, bc I refuse to get killed or kill anyone else with all these problems. I was also told that my jeep of the 26 model engine change out was no the only one. All of them are coming back in with major problems.

My 2026 Jeep Grand Cherokee has experienced repeated engine shutdown and braking-related failures while driving. The vehicle is currently at an authorized Jeep dealership and is available for inspection upon request. On May 17, 2026, while driving to Fair Oaks dealership due to an unusual engine noise, the check engine and brake warning lights came on. The engine then shut off while I was in the roadway, and I experienced loss of normal braking ability. I was frightened but managed to move the vehicle safely to the side of the road without a collision. The dealer inspected the vehicle, replaced the spark plugs, and returned it on May 29. I later received a recall notice involving the spark plug issue. I returned the vehicle to the dealer on September 11, 2026, and the recall/service work was completed. On September 23, 2026, while driving to work, a similar dangerous failure occurred again. The check engine light came on, the engine shut off while the vehicle was moving, and I again experienced a braking problem. I was terrified but fortunately managed to stop safely. The vehicle was towed to the authorized Jeep dealership. The dealer inspected it and told me the problem was related to the auxiliary battery and repaired it. The problem has therefore occurred more than once and has been inspected/repaired by an authorized Jeep dealer. Jeep Customer Care has also been notified under Case #98217351. To my knowledge, police and insurance representatives have not inspected the vehicle because no collision occurred. I have not picked up the vehicle because I no longer feel safe driving it. An engine shutting off together with braking problems while the vehicle is moving creates a serious risk of a crash, injury, or death to me, my family, other motorists, and pedestrians. No one has been injured so far, but I believe we were extremely fortunate. I request that NHTSA investigate this repeated safety failure.

While driving approximately 65-70 mph on a highway, my 2026 Jeep Grand Cherokee 4x4 with approximately 15,000 miles suddenly jerked to the right and a loud knocking/clunking noise was heard from the drivetrain area. Immediately afterward, vehicle performance decreased significantly and the vehicle struggled to accelerate. The sudden loss of power at highway speed created a safety hazard due to surrounding traffic. No warning lights or messages appeared. The condition persists and the vehicle continues to have acceleration problems. This was very unsafe because either myself or other couldve been injured. I called jeep and they told me to drive it in to the Dodge dealership in Andrews TX, I want to emphasizes this is very unsafe, because it wont accelerate as it should. I have to drive down a road that oil tanker semis drive on as well.

Jeep just died going down the road - idle is off - report from computer says misfire on cylinders and bad emissions. Also auto shot off doesn’t work and radio freezes up.

Final NHTSA Complaint Vehicle information * Year: 2026 * Make: Jeep * Model: Grand Cherokee * Trim: Limited Reserve * Engine: Hurricane four-cylinder * VIN: [XXX] * Current mileage: 1,199 miles * Incident mileage: 1,181 miles * Incident location: Parking lot in [XXX] * Manufacturer case number: XXX * Dealerships involved: Sarasota Jeep and Venice Jeep Complaint title Bucking, jerking, rough running, unexpected forward movement, and stalling in Reverse Complaint description I am reporting a possible safety defect involving my 2026 Jeep Grand Cherokee Limited Reserve equipped with the Hurricane four-cylinder engine, VIN [XXX]. The vehicle repeatedly bucks and jerks during acceleration, including at approximately 5 mph in parking lots. It also runs roughly and has demonstrated unexpected forward movement. These problems affect the vehicle’s ability to accelerate and operate smoothly and may create a safety risk near pedestrians, parked vehicles, other objects, and surrounding traffic. On XXX, at approximately 4:49 p.m., in a parking lot in [XXX], and with the vehicle at approximately 1,181 miles, I shifted the vehicle into Reverse. The Jeep shook severely and stalled. After I restarted the Jeep, it ran very roughly, continued bucking, and jumped forward unexpectedly. This created a potential risk of striking another vehicle, pedestrian, or object in the parking lot. The vehicle also continues to buck and jerk at approximately 5 mph in parking lots, creating an additional risk of unexpected movement near pedestrians, parked vehicles, and other obstacles. On XXX, at approximately 6:22 p.m., I contacted Jeep Customer Care and reported that the vehicle had stalled when I shifted into Reverse and that it ran very roughly after restarting. The manufacturer case number is XXX. I previously reported the bucking and jerking condition to Jeep dealerships. A service advisor at Sarasota Jeep stated INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I purchased a new 2026 Jeep Grand Cherokee Summit equipped with the new 2.0L Hurricane 4 Turbo. The vehicle has a repeatable and potentially dangerous accelerator-response problem. From a complete stop, I can apply substantial/full accelerator input and the vehicle initially provides little or no expected acceleration. The vehicle may begin creeping forward and the tachometer may begin moving, but there is little corresponding engine sound or vehicle acceleration. After approximately two seconds, the vehicle begins responding and accelerating however it is still extremely sluggish and dangerous. The condition has been repeatedly reproduced in both Normal and Sport modes. I have also experienced delayed RPM increase and delayed transmission response/downshift while already moving. The condition has occurred when attempting to enter traffic and creates a safety concern because the vehicle does not immediately respond as expected to accelerator input. The dealership initially told me the vehicle was operating normally based on diagnostic readings amd that because of the computers and software there is no direct throttle response on these drive by wire vehicles anymore. That is simply intrue. The dealership subsequently had the shop foreman test drive with me in the vehicle. The foreman experienced the condition and agreed there was an issue with the lack of throttle response. I repeated the issue multiple times from stop, ehile turning, and at speed. The dealership is now involving a technical advisor. The dealer has told me that a Stellantis service bulletin concerning similar drivability symptoms does not apply to my VIN. I am not alleging that the bulletin applies to my vehicle. I am reporting the actual safety-related behavior because I believe it warrants investigation regardless of whether my VIN is currently included in that service action.

Purchase the vehicle May 19th and on arriving home later that week realize the passenger rear wheel well had no plastic nuts holding it on which also holds the bumper support beam so therefore the rear bumper was blowing in the wind. Contacted Capital City Chrysler Dodge Jeep ram about it and they offered no solution to this so I ended up having to buy parts from Mopar parts online to attempt to correct. The wheel liner could have easily blown out of the wheel Arch and caused a safety issue had we not taken one of the nuts from the driver side and put on the passenger to hold it more firm. Dealership sent an email saying that they simply cannot check all of these safety issues in a 15 minute inspection when they come off the truck.