*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
When driving on the highway going 65mph the car slipped in neutral and error showed on dashboard "transmission malfunction stop." I could steer and break, but not accelerate. Pulling over on side of highway, I was able to put in park and then drive. I pulled off the exit and the car did the same thing within 10 mins. Car was towed to Mercedes dealership in Warwick, RI. I was made aware after inspection that there was nothing wrong with the vehicle nor the transmission, but rather there was a needed software update that was causing the issue that had been identified previously. Regular service was due, but no indication whatsoever of the error I saw nor any other error codes. No error showed…
Mar 16, 2026Fuel/propulsion system
My fuel injection has been replaced 2 times in 3 years. Was advised that it could cause damages to other parts
Aug 7, 2025Service brakes
Brake over heats because of rust caused by rain which builds up causing brakes to freeze up. Explanation from dealer. In fact told us we need to dry brakes off if we drive in rain and park in garage for more than 2 days or we will have it happen again. Brakes freeze and car locked up and canât move it. We bought the car used had it inspected by a MBD in Atlanta G. Bulkhead , told breaks were like new. Mileage 23,666 miles. Put on about 4000 miles now brakes gone froze up from rain. Garage kept. While driving car we were noticing almost like the breakers were on but not stepping on break. A pulling like action. Seemed like emergency brake was on. Car at dealership now in Greenville SC…
Aug 14, 2025Exterior lighting
Despite maintaining the vehicle according to the recommended schedule, I have encountered ongoing performance issues (electrical, rear shocks, fan motor etc.) that are not in line with the standard of quality I expect from a brand of your reputation. Window not going down all the way on the driver side. Radio not working but was fixed. These issues have caused inconvenience and concern regarding the reliability of the vehicle. To address my concerns, I spoke with a Mercedes-Benz representative who informed me that, due to the problems Iâve experienced, I may be eligible for either an extended warranty or a credit toward the purchase of a new vehicle. After careful consideration, I opted…
Sep 20, 2024Electrical systemCrash
this car really has a lot of issues and honestly if I didnât know what to do last night and didnât know about cars, it could have seriously cost me my life but luckily I was able to move out the way of a truck that was coming fast behind me while I was at a traffic light and when the light turned green the car would not start back up from the automatic stop when you make stops and because the auto shut off never came back on and I had to literally make a split second decision and put it in park and start up again and go quick. The check engine light has been on since July 14,2024 and I bought the car on July 13,2024 and the dealership has not done anything about this issues and this…
Aug 9, 2024Forward collision avoidance › Adaptive cruise control
Coordinate this complaint with previous complaints reference 11569682 and 11569502, As of last night the car has 1136 miles. I have thoroughly tested the car to the best of my ability and set and reset the settings. The hill decent has only engaged twice. The car is supposed to read speed limit signs and it does show up in the instrument panel but the car speeds up randomly i.e. from 35 to 50 and above to not limited to 35. The adaptive speed control at random will malfunction the car will not slow down and brake. This has happened several times. When turn signal is engaged and you enter turning lane the car may slow down or not. This vehicle I was told is a MBUA corporate vehicle held back…
Feb 2, 2024Forward collision avoidance › Adaptive cruise control
All advance driver assistance system has a 50% work fail reliability. It may work it may fail to work, I bought the cat from a Mercades Dealer in Las Vegas with 48 miles on it. The vehicle has approx 900 now. The driver assist system fails daily, it is unreliable, dangerous and a hazard to occupants and others. It needs to be inspected and repaired, recalled.
Jan 30, 2024Forward collision avoidance › Adaptive cruise control
Driver assist adaptive speed control, braking, lane control all boxes checked has a 50/50 work fail that is it may work may not work. This is a safety concern that needs to be checked by MBUSA
Jan 29, 2024
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.