MERCEDES-BENZ Complaints

Car was pulling to one side. Replaced the front routers and breaks. Problem still persisted. After more investigating the subframe was found to be rusting out, Mercedes of New London CT said it was unsafe to drive. But allowed my daughter to drive it home. This car was purchased it brand new from Mercedes=Benz of Warwick. The car was garaged all it life. This should not happen. They have had recalls and problems with this model just not this one. My concern is the safety of those driving this model clearly the problem was not solved. Please make Mercedes notify people driving this model, that there is a known subframe corrosion issue.

The battery in this car can catch fire at any time while parked. The dealership would not take the car to inspect, repair or replace the battery because there is no remedy available at this time. The recall information go back to January 2026 with no remedy or resolution available period. Instructions say I can charge it only up to 80%. I have to make adjustments to my daily routine. Instructions say I have to park it away from buildings. This car is a serious safety hazard for humans and buildings.

On July 7, 2026, my 2022 Mercedes-Benz GLE 350 experienced a serious engine malfunction. After stopping at a traffic light, the engine began shaking violently and idling roughly. When the traffic light turned green, the vehicle accelerated extremely slowly and had very little power, making it difficult to clear the intersection. The engine continued running roughly, and I was concerned the vehicle could stall in active traffic. At the same time, the ECO start/stop system automatically disabled itself and displayed "OFF" in white on the instrument cluster. Because the vehicle appeared unsafe to drive, I had the vehicle towed to Mercedes-Benz of San Jose on July 8, 2026. The dealer confirmed the rough-running engine condition and advised that the cylinder head ("engine top") must be replaced. This incident occurred after three repair attempts for recurring engine-related check engine light faults within approximately six months: 1.January 23–28, 2026: Check engine light illuminated. Dealer diagnosed fault in motor electronics for code P240200 (Actuation of the pump in the diagnostic module of the evaporative emission control system has a short circuit to positive). Separated diagnostic module from charcoal canister. Replaced. Cleared codes. System OK. 2.May 13–26, 2026: Check engine light illuminated again. Dealer diagnosed fault code P260F00 (monitoring of the evaporative emission control system has a malfunction). Multiple diagnostic tests were performed. All OK. Evap system OK. No replacements of parts before the vehicle was released. 3.July 4, 2026: Check engine light illuminated for a third time. On July 7, the engine began running extremely rough while stopped at a traffic light, causing a significant loss of power and severely limited acceleration. The vehicle was subsequently towed to the dealership. I am submitting this report because the recurring engine malfunction has progressed to a sudden loss of power in traffic, creating a potential safety hazard.

The contact owns a 2012 Mercedes-Benz ML350. While the contact’s wife was driving approximately 30 - 35 MPH, the message "Do Not Drive Vehicle" was suddenly displayed. The vehicle was taken to a mechanic, and the brake fluid reservoir was topped off. The mechanic was unable to find any leaks. The vehicle was not diagnosed or repaired. The message turned off and was displayed again 4 hours later. The contact was called by his wife, and the vehicle was driven to the residence after the brake fluid reservoir was refilled. The contact stated that a half mile later, the message was displayed again. The vehicle was driven to the residence and parked. The dealer was contacted and confirmed that there was no recall associated with the VIN related to the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 122,000.

My 2020 E450 has not been serviced on schedule due to Mercedes-Benz of Indianapolis and its service manger banning and blacklisting me for months. This service department would not allow my vehicle to be serviced under a prepaid maintenance and wheel and tire plan, and most importantly my vehicle's warranty. When I went there for an appointment, a flat tire, or help with my vehicle, they kicked me out, verbally harassed and threatened me because I did not pay the deductible on a loaner vehicle because my signature was forged to submit a false claim. I have had problems with my vehicle, but most recently, as I was driving on a roundabout in rush hour traffic, when my vehicle suddeny stopped and experienced lack of compulsion and would not drive. It had already had a check light engine, tires, batteries, and brakes. It was surprising because my 2020 E450 Mercedes-Benz had only 39,000 miles. I did not have anywhere to take it to. Mercedes-Benz Customer Care authorized it to be towed to the Mercedes-Benz of Fort Wayne because the service manager black listed me from surrounding MercedesBenz service departments. When my vehicle was towed to Fort Wayne, the service department would not allow me to use my warranty. It had expired before I had a chance to use my prepaid plans. I explained my issues, and in April and May, I told them about a recall. They ignored me, but saw problems and concerns of safety while I wad driving. They did find leaking and now what to charge me $26,000 to replace mt vehicle's engine, such as a leakage and symptoms of the exact signs of what the recall states. As of today, Mercedes-Benz of Fort Wayne has had my vehicle since April 1, 2026, (three months) in an unassembled state. Now, they are threatening to charge storage fees and sieze by vehicle even though it is unsafe to drive. Thank you for taking time to read this.

The electric refrigerant compressor on my 2023 Mercedes-Benz EQS 580 4MATIC SUV failed without warning. On this vehicle, the compressor is a dual-function safety-critical component: it provides cabin air conditioning and, more importantly, active cooling for the high-voltage lithium-ion battery pack. I am filing this complaint because a single-point failure in a component responsible for high-voltage battery cooling should not occur on a vehicle of this age and mileage, and because owners receive inadequate warning of the safety consequences when it does. I request that NHTSA investigate the failure rate of the electric refrigerant compressor on 2022–2024 EQS-platform vehicles and evaluate whether the battery thermal management design provides adequate redundancy and driver warning The vehicle was taken to an authorized Mercedes-Benz dealer, which confirmed the refrigerant compressor failure and replacing the compressor under warranty. Parts are backordered per Mercedes. The vehicle has been off the road for 28 days The dealer did indicate awareness of similar failures on other EQS vehicles.

The panoramic sunroof exploded upwards and outwards while driving under normal conditions. It created an extremely loud and startling sound that left the driver and passenger stunned. We were fortunate there was not an immediate oncoming vehicle as we likely would have struck head on. Shortly after the explosion, tiny shards of glass began to fall into the passenger area. We were also fortunate to be able to get the vehicle safely off the road. The vehicle was brought to the dealership and the manufacturer was called. They are all pretending they have never heard of something like that happening when a quick search reveals this is a known manufacturing defect with a class action lawsuit filed. The named plaintiff is actually a customer from the very dealership we brought the vehicle to for service. There is no chance they are not aware of the problem.

While I am driving my car it will make a loud crackling sound then my screens go black and warning sounds go off! This is not normal and I read there are recalls but when I entered my vin# nothing came up. Not to mention since I bought the car last February, I have had nothing but issues with my AC turning off which that I have taken to the dealership with video proof and told it was a software update which did not fix the issue. i am paying way too much money for a newer vehicle and having more issues than my 2015 Mercedes Cla 250.

Description of Incident:The electronic ignition module suffered a sudden failure due to unsealed manufacturer water intrusion, leaving the vehicle completely stranded with an immediate safety hazard. Component failed & available for inspection: Electronic Ignition Switch (EIS) module / Ignition Control Module. Yes, it is available for inspection. Safety risk: The sudden failure causes an immediate safety hazard by leaving the vehicle completely stranded with no way to shift the transmission into neutral to pull it out of harm's way. Confirmed by dealer/independent center: NO, the vehicle has not been towed to a shop yet due to the high cost of repairs. Inspected by manufacturer/police/insurance: NO Warning lamps or symptoms prior: There were no warning messages. The ignition system simply went completely dead without warning.

The rear lift gate closes unexpectedly when standing behind the vehicle and loading or unloading the cargo area. The keyless soft close activates even though there is no foot movement, or when there is minimal movement. This happens without warning. On several occasions this has happened to me, and also to my wife. It has caused minor bruises, but more importantly we are both older and it has been difficult extricating ourselves and reaching the control to raise the gate again. While there have been no falls yet, it's only a matter of time before someone loses their balance or is hurt in some other way. This has been reviewed by the local dealer's service department who says there is nothing wrong. It has also been discussed with an engineer at Mercedes with no result.