2021 MERCEDES-BENZ GLE 350 Complaints

Location: Dallas, TX – Woodall Rodgers Freeway near North Hall Street exit Mercedes-Benz USA Case #: 18469650 What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle’s 48-volt electrical architecture appears to have failed, specifically the DC/DC converter or Integrated Starter-Generator (ISG) that provides 12-volt power to all control modules. When this component failed, it caused a total loss of propulsion and electrical power. The vehicle is currently at a Mercedes-Benz dealership in Dallas and available for inspection upon request by NHTSA or Mercedes-Benz USA (case #18469650). How was your safety or the safety of others put at risk? While driving approximately 50 mph on the Woodall Rodgers Freeway with my family in the car, the vehicle suddenly lost all engine power and throttle response without warning. The accelerator stopped responding, and the engine stalled completely within seconds. I was able to coast partially onto an exit ramp, but once stopped, the car would not restart and could not be shifted into Neutral. We were stranded in live traffic with limited steering assist and no way to move the vehicle, placing my family and other motorists at serious risk of collision. Has the problem been reproduced or confirmed by a dealer or independent service center? The vehicle is currently at a Mercedes-Benz authorized dealer, and the failure has been logged with Mercedes-Benz USA under case #18469650. Initial findings point to a malfunction of the DC/DC converter or 48-volt system. Full STAR diagnostic data and fault codes are pending. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? Mercedes-Benz USA has been notified and opened case #18469650. The vehicle has been inspected by the dealership’s certified technicians and is awaiting official diagnostic reporting and possible engineering review through Mercedes’ Technical Assistance

Not sure vehicle was parked and caught on fire from the drivers side completely burning

I am writing to document a recurring and serious issue with the Mercedes-Benz GLE equipped with the M264 engine, specifically relating to premature cylinder head failure. In my case, the vehicle began showing the following symptoms: Rough engine idle and noticeable vibration during startup Loss of power, especially when accelerating Check engine light with fault codes related to misfire or combustion issues Oil and/or coolant loss, with no external leaks Engine knocking or ticking noises near the top end of the engine After a professional inspection and diagnostic testing, I was informed that the issue is likely due to a defect or failure in the cylinder head, possibly involving warping, cracking, or failure of the valve seats or head gasket area. Upon further research, I discovered that this issue is not isolated. Multiple owners of vehicles with the M264 engine—including various GLE, C-Class, and E-Class models—have reported similar problems, often occurring well before 70,000 miles and despite regular maintenance. The pattern suggests a possible design flaw or quality issue with the engine’s cylinder head. As of now, it appears no formal recall or technical bulletin has been issued by Mercedes-Benz regarding this specific problem. However, the number of similar reports suggests the issue is widespread enough to merit formal investigation or at least acknowledgment by the manufacturer.

The car has stalled 4 or 5 times, while driving in traffic. This can obviously be life threatening. The check engine light came on yesterday. We recently brought the car to Mercedes Benz in Daytona Beach, Florida. They told us we had low pressure in the cylinders, and needed a new cylinder head for $10,000. The cylinder pressures on their test however were all normal. They never mentioned a recall for a fuel pump defect causing cars to stall. A local independent repair company confirmed the cylinder pressure test was normal. Mercedes recalled 324,000 vehicles for this defective fuel pump between 2012 and 2020 (abc news). They recalled over 143,000 vehicles from June 2021 to 2023. My model, GLE350, was included in both recalls. I called Mercedes customer service. They said my car was built in February 2021, and there is no recall for this vehicle. There have been recalls for defective fuel pumps from 2012 to 2020, and June 2021 to 2023. I strongly suspect my vehicle built in February 2021 has the same defective fuel pump. I will bring the vehicle to an independent well qualified service center. If they diagnose a fuel pump problem. I would like Mercedes to reimburse me for the repair.

On May 26, 2025, around 3:00 PM, I was traveling with my family on a bright and sunny day, with no rain for several days leaving the roads dry. As we were on I-35, I took an exit, and just a few seconds later, my 2021 Mercedes-Benz GLE 350 unexpectedly shut off, all the lights on the the dashboard lit up, and the vehicle came to a sudden and complete stop. Thankfully, this incident occurred on the service road rather than the highway, and we were at low speed otherwise it could have posed a serious risk to my family and me. Once the car stalled, both the steering and tires locked up. However the vehicle had power but would not start or move. As the same situation could happen to someone else which could put them at serious risk it might be in the best interest of Mercedes-Benz to research and fix this issue. I reached out for a tow truck, and the driver had to hook it up and drag my vehicle onto the flatbed. Mercedes-Benz service suggested a replacement of the engine and could not diagnose what the issue is. I have consistently performed the recommended maintenance on my vehicle since I purchased it, and it currently has around 63,000 miles.

While driving at about 55mph on road with one lane going each way, the car engine shut off, all instrument displays went off. There was no check engine light, warning or noise. I was almost rear ended by a car behind me. The car behind me swerved barely missing me, but almost hit oncoming traffic. Once car was on side of road it would not start. I tried to jump car battery with NOCO jump starter and it did not work. Instrument display did not come on, car transmission stuck in Drive. After testing battery with digital voltmeter it showed 12.6V, but car would still not come on nor would instrument display. Car had to get towed to dealer where it's currently at being diagnosed. This was very dangerous and could have been fatal.

The contact owns a 2021 Mercedes-Benz GLE350. The contact stated that while the vehicle was parked, there was condensation leaking from a hole near the trunk release button onto the pedal and the floor of the front passenger’s side of the vehicle. The vehicle was not diagnosed or repaired. The contact believed that the failure was associated with NHTSA Campaign Number: 23V177000 (Visibility). The vehicle was not diagnosed of repaired. The manufacturer was notified of the failure. The failure mileage was 57,432.

My Mercedes gle350 2021 is having a cylinder misfire. I had the repairs done last February. Carlton Mercedes acknowledged this is a known issue with this car. Did some googling and saw how big of an issue this is in this car. Repairs were made and now a year later cylinder misfire again! My neighbor has the same car but 2022 having the same issue currently. This needs to be recalled. Mercedes needs to be held accountable for this issue. It’s costing people anywhere from 7-15,000 dollars to repair and most of these cars only have around 50,000 miles on them! It’s insane!!

The contact owns a 2021 Mercedes-Benz GLE350. The contact stated while driving at approximately 45 MPH and depressing the accelerator pedal, the vehicle was jerking and bucking while attempting to enter a highway. The contact stopped and turned off and restarted the vehicle and was able to drive the vehicle normally. The contact stated that the failure was intermittent and occurred at various speeds. The contact stated that she had observed the check engine light was illuminated. The contact stated that the check engine warning light was blinking. The contact stopped and restarted the vehicle to reset the check engine warning light. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that there was a misfire in cylinder #2, and the cylinder needed to be replaced. The contact was advised by the dealer that the cylinder failure was a known failure by the dealer. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 100,000.

I was driving down with my wife at a street, 35 miles per hour speed and suddenly heard an loud Explosion above my head and my wife screamed and I suddenly applied the break to avoid an accident as luckily there was no other car in back and front. There was a sudden break applied and my wife's neck and back got hurt due to sudden break fear of explosion and got severe pain in her neck and back. I pulled over a side and found out that the glass panel burst and cracked all the way across my vehicle between sunroof and the windshield. Dealer said it is not under warranty even I still have warranty as my vehicle has only 36,000 miles and excellent condition and always dealer maintained. Dealer asking $2,700.00 to replace and fix. This is due to MB manufactures defect which I found out that it is prone to break due to poor design and might have caused accident if driving on freeway in speed as it scared the [XXX] out me and my wife while it exploded on top of our head. It happened to several cars and MB has not recalled yet and asking to pay $2,700.00 to replace and fix. Action Law Suit have been filed by others as given below for reference and help to get my vehicle repaired. (1) [XXX] (2) [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)