Mercedes-Benz
E-Class

Major issue found with engine cylinder head in various models with 2.0 Liter Turbo charged engines (Engine code M260 or M264). Cylinder heads have premature wear at valve seats, causing engine misfires and unsafe driving conditions. (Sudden loss of power, even on freeways.) Mercedes-Benz had improved cylinder head design to mitigate this issue, thus proving that they knew it was their product quality that is causing these unsafe issues. Mercedes-Benz even put out a service bulletin to address these defective cylinder heads. This publication can be found under XENTRY, Topic Number LI01.30-P-072328, Version 8, published 9/26/2023. My contact at Mercedes Dealer informed me that they are seeing a drastic increase in this problem affecting roughly over 25% of the models with these engines. They are beginning to fail at around the same time as the warranty expires. There are numerous stories on the internet concerning this issue, examples can be found in the following links: https://www.facebook.com/groups/mercedesbenzowners/posts/10162557430080937/ https://www.mercedesgleforum.com/threads/cylinder-head-replacement-11-500.4399/ We contacted Mercedes-Benz US Headquarters, they do not believe it is their problem and throws petty money around in attempt to strong-arm owners to shut us down. All we request was for Mercedes-Benz to own up to their quality issues and handle the repairs at their expense. Please help me among all the other owners that this is affecting. Thank you in advance for your assistance in this matter.

Twice within a year a "48 voltage battery malfunction" warning appeared on my dashboard. Then a red warning light appears and I had about 30 seconds to find a safe place to pull over as loss of power causes deceleration of the vehicle . The cause, according to the diagnostic test performed by 2 different Mercedes dealerships, is that a software update is needed. A know of no situation where the machine crashes first then you're told to update its software. I am concerned that this will unexpectedly happen again and possibly on a road where pulling over to a shoulder may not be possible in the little time given before power failure.

An underbody splash shield (one of three, I believe), covering the transmission (the middle of the three) detached at highway speed and fell off the vehicle. This caused the leading edge of another shield to detach, which then, due to air flow, began dragging the highway. It was quite a noise; initially I thought it was a tire blow out. I quickly decelerated to try to move to an exit (it was urban highway with no shoulders), at lower speeds, the panel stopped dragging. There was no road debris involved in the event. The first panel simply detached (and was not recovered / recoverable due to the location) leading to the second. The initial mechanic replaced two bolts to secure the second panel. He said this is not uncommon on Mercedes Benz vehicles and seemingly knew exactly what was needed (I was expecting duct tape on a weekend morning). Later, after some discussion, the dealer (the car was under warranty; only 13,000 miles) replaced the missing panel as a "courtesy" but not under warranty (because they said I did not have the missing part).

On June 16, 2024, while driving my 2022 Mercedes E 350 with my two young children in the car, my sunroof suddenly and literally exploded. Fortunately, the sunroof screen was closed, which prevented us from sustaining any direct injuries. However, the entire sunroof shattered and is now gone. The explosion sounded like a gunshot, causing immediate and extreme distress. My body began shaking uncontrollably from the shock and fear of the incident. This unexpected event posed a severe safety hazard, and I am deeply concerned about the potential risks to other drivers with similar vehicles. **Vehicle Information:** - Make: Mercedes-Benz - Model: E 350 - Year: 2022 - Mileage: 87,000 miles **Incident Information:** - Date of Incident: June 16, 2024 - Description of Incident: Sunroof explosion while driving with children in the car. I urge the NHTSA to investigate this matter as it is a critical safety issue that could have resulted in serious injuries or worse.

Auto break suddenly activated during traffic with no obstruction ahead. Also Automatic Headlamp Mode Inoperative comes on and off

My vehicle suddenly stopped in the middle of road. It showed gas tank empty though tank had half tank gas. i would have been hit by a vehicle behind me. Fortunately, there were no vehicles behind me. i filled the remaining half tank , then car started again. I believe that gas sensor was not working. I dropped the vehicle for service to the mercedes benz dealerwith full tank of gas. It was showing empty gas tank and i can drive zero miles. Dealer told me after 3 days that gas tank needs to be replaced. My concern is that , manufacturer might have made a defective gas sensor or gas tank. This may lead for deaths. It may need a recall , if you have received similar complaints. I contacted the dealer who sold the vehicle by email. I didn't get any response. I am unable to upload that file here. upload file in this link is not working.

there is a recall on my vehicle for over 4 months now. i keep going/contacting the local dealers about the issue and they keep telling me to come back in a month and every time they tell me there is no remedy yet and they dont know when exactly they will be able to fix it. and according to NHTSA this could increase the risk of crash or injury. please help me either get this fixed or make sure its safe for me to drive. thank you

The contact owns a 2022 Mercedes Benz E450. The contact received notification of NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The local dealer was made aware of the issue and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool showed no open recall.