2016 Mercedes-benz GLC-Class Complaints

I am writing to express my deep concern and seek assistance regarding a potentially serious safety issue that I have experienced with my vehicle. I believe that my experience poses a significant risk to both my safety and that of other road users. In June, I encountered a distressing incident when my vehicle's steering wheel locked unexpectedly, leading to a hydroplaning incident that caused my vehicle to veer off the road. Fortunately, there were no injuries, but the situation was undeniably dangerous and alarming. My vehicle displayed a "steering wheel malfunction" message on the screen at the time of the incident. Following this event, I immediately contacted Mercedes Benz to report the issue and seek resolution. Subsequently, on August 1st, my vehicle was taken to a local Mercedes dealership as part of their investigation into the matter. On August 4th, I received a call from the dealership informing me that the inspection had been completed. However, they stated that they were u...

I lost power on while driving at speed and almost got rear-ended before pulling over. I had to tow the car to a mechanic. After diagnosis it turned out the pistons are cracked and had to be replaced as well as the rod bearings. The pistons have a very abnormal burn pattern and rod bearing wear per my mechanic. This is a beautiful car and I take above average care of it. No car sold in the US should have pistons crack at such a short amount of miles. I believe Mercedes Benz should be held liable for their engineering error.

The contact owns a 2016 Mercedes-Benz GLC300. The contact stated that the check engine warning light was illuminated. The vehicle was taken to dealer, where it was diagnosed that the crankcase ventilation system needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the dealer, where the diagnostic result was confirmed. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 30,000. The VIN was unavailable.

While driving my car, I tried to open the Panamatic sun roof to get air. As I pushed the button to open the sun roof, it opened a crack on the the driver side and the other side of the sun roof stayed closed. At this point I heard a crashing assembly noise and the whole sun roof got stuck uneven and crooked. Driving on highway, I was shocked and felt in danger getting to an automobile accident and getting hit by other cars or any loose parts hitting them. Getting myself together, I pulled over and got out of the highway. I parked and tried to understand what happened. I tried to close the partially opened on one side glass roof with no avail. It was totally stuck. I parked my car and went home. A day after the incident, I had the car towed to an authorized repair shop for investigation and repair. It took two days to repair and replace all of the roof railing assemblies. A copy of the invoice is enclosed. It was a very dangerous and traumatic experience for me and I truly felt in this...

What component or system failed or malfunctioned, and is it available for inspection upon request? Crank case vent valve malfunctioned 2 years ago and was replaced. Now it is failing again. Reports online from other owners show this part failing about every 2 years / 20k miles. This is not a wear item. Yes it is in my car How was your safety or the safety of others put at risk? It is part of the fuel system so it can potentially damage the car Has the problem been reproduced or confirmed by a dealer or independent service center? Yes Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? It has been inspected by the dealer Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There is a check engine light that appears right at failure, not before.