*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Lane departure › Blind spot detection
While driving on the highway on three separate occasions the blind spot warning will pop up and show as inoperative, next the active break assist warning flashes as inoperative, and then the entire vehicle shows as inoperative and loses all acceleration and breaks down. This has happened three times. Stayed over night at the dealership they âdrove it for 70 milesâ it didnât happen to them. They released the truck back to me saying it was perfectly fine. A day later it happened again while on the highway. Highly unsafe!
Jun 20, 2026Engine
At approximately 87,000 miles, my 2021 GLE350 (M264 2.0T engine) experienced a severe engine misfire resulting in a flashing check engine light, rough idle, engine shaking, significant loss of power, and near-stall condition. The vehicle was taken to Speedhaus Automotive (Newbury Park, CA) where all four ignition coils and spark plugs were replaced. Total repair cost was approximately $635. This failure pattern is consistent with the documented M264 exhaust valve seat wear issue acknowledged by Mercedes-Benz technicians. A Mercedes dealer service report on an identical 2021 GLE350 explicitly states: "COMMON ISSUE FOR EXHAUST VALVE SEATS TO WEAR â KNOWN ISSUE WITH 260 AND 264 MOTORS."…
Jun 2, 2026Suspension
2021 Mercedes-Benz GLE 350 W. APROX: 30,000 MILES. PURCHASED THE VEHICLE 3 YEARS AGO, WHEN IT HAD 17,000 MILES ON IT. WHEN DRIVING AT TIMES THE PASSENGER REAR SHOCK WILL START MAKING SQEAKING / CREAKING NOISES. BEEN LIKE THIS FOR ALMOST 1 YEAR NOW. I DONT DRIVE THE VEHICLE VERY OFTEN, BUT WHEN I DO DRIVE IT IT IRRITATES ME. THE DEALERSHIP SAID THE SHOCK NEEDS TO BE REPLACED. THERE ARE NO VISIBLE LEAKS, NO ABNORMAL RIDE QUALITY, ETC.
Jun 2, 2025Visibility › Defroster/defogger/hvac system
The contact owned a 2021 Mercedes-Benz GLE 350. The contact stated that warm air was blowing from the A/C unit while activated. The vehicle was taken to an independent mechanic, and the contact was informed that a leak had caused the A/C unit failure. The mechanic referred the contact to the dealer for assistance. The vehicle was taken to the dealer where a diagnostic test was performed. The contact was informed that the HVAC system was inoperable and an estimate for the repair was provided. The manufacturer was notified of the failure, and the contact was provided a case number. The manufacturer denied responsibility for the failure but offered a monetary credit towards the repair. The…
Mar 21, 2026 · 66,000 milesEngine
While driving at night all error light showed up. I slowed down to the side of the road and while I was slowing down the engine died. I tried to start the car which worked but when I pressed the gas the engine died again. Tried it two more times with the same results. Then turned the car and waited a bit with the engine running. slowly started driving and was able to get home driving 20 mph. The next day took it to a shop that said that the battery was weak and they replaced the battery. Drove out of the shop and started hearing nosies from the engine. Immediately came back and was advised to take it to the dealer. Towed it to the dealer that checked it and said that they found metal in the…
Feb 17, 2026Vehicle speed control
The vehicle has repeatedly experienced a sudden loss of acceleration, entering a reduced-power state while driving. Most recently, this occurred less than one week after I was advised that the issue had been fully resolved through a relay replacement. Critically, these incidents have occurred while my [XXX] child was in the vehicle, creating an unsafe and unacceptable situation. Below is a summary of the work that was done to resolve the safety concern. October: Drivetrain/Powertrain control unit internal fault Replacement of gateway/powertrain control module Wiring, grounding, and software inspections November: Active Brake Assist, ESP, and voltage supply faults Failure of both rear wheel…
Feb 13, 2026Engine
This is regarding a 2021 gle 350. The car was parked overnight and in the morning was unable to start or crank . I had to tow the vehicle to the service center that has maintained the car since purchased date and they told Me thereâs a problem with the engine and I will need a new engine costing $28,000 dollars., the car has 42,000 miles and has an impeccable service history with Mercedes Benz. They did not tell me any specific engine part thatâs faulty. There was no warning lights, check engine lights. Had I been driving this car and it happened it could have been catastrophic.
Jan 25, 2026Engine
There is a known issue with the Cylinder Heads on specific models of Mercedes vehicles. Symptoms of M264 Cylinder Head Failure If your GLE 350 is experiencing these symptoms, it may be covered under the extension: Check Engine Light (MIL): Often triggered by misfire codes. Rough Idle: Noticeable shaking or uneven idling when stopped. Loss of Power: Potential stalling or significant power reduction during acceleration. Low Compression: Diagnostic tests often reveal low pressure in one or more cylinders. This is not being addressed my Mercedes USA where Mercedes Canada has offered an extended warranty. Using social media I have comprised a list of over a hundred impacted owners. Many more…
Nov 6, 2025
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.