2016 MERCEDES-BENZ GLC300 Complaints

When driving the car, the engine began to violently shake and fail. The engine ended up having a piston failure due to a small wrist pin and needed the entire engine block replaced. I was lucky that I was not on the freeway or in a more dangerous spot when the engine failed while driving.

Diagnose: code P05271 - Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction. Mercedes Benz extended warranty to 15 yr / 150k miles for intake assemble which resolve this issue. Like to acquire a confirmation letter from Benz to cover the repair by the Benz dealer

Sunroof. The sunroof is not opening properly. It sounds Ike the window is going to come off of its track. Making a loud noise.

A notice was issued for a common issue with many Mercedes Benz models. https://static.nhtsa.gov/odi/tsbs/2023/MC-10243565-0001.pdf A notice was issued for a common issue with many Mercedes Benz models. [XXX] While the problem is well known, all dealers are reporting the part is in back order without any visibility on when it would be available. This is forcing drivers, including myself to continue to drive the car and potentially creating a big damage to the car. I took the car to Mercedes-Benz of New Rochelle in NY state. I called multiple dealerships in the tri-state are and they all mentioned that the issue was well known without any ETA. Also with a check engine light the car can't pass safety/emission inspection and is not sellable. I bought a new car, can't sell this car and have 0 visibility on when I can get it fixed to sell it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I own a 2016 Mercedes Benz GLC 300 and I’ve noticed that a strong gas smell when I start the car during cold weather. You notice the smell outside and inside the cabin as well as it comes in through the vents.

According to NHSTA ID 21V197000 bulletin, my 2016 GLC 300 qualifies for recall related to sunroof safety matter. My sunroof is loose and dealer said since your organization didn’t include my VIN for this recall, they will not address it. Can you please add my VIN. I’m experiencing exactly as described in your recall bulletin. Thank you!

The P052E error has popped up which requires the replacement of the PVC assembly. This is a known issue with these engines and causes the engine to run erratically. Mercedes knows that the issue is common. Please investigate and issue a recall if applicable.

I have noticed extreme gas odors in the cabin of my car, the gas odor is so horrific that even when I exit the car either outside or in my garage the odor remains. My car is housed in my garage and I'm very concerned regarding these fumes which fills up my garage because my home is attached. I researched on a web site that there has been complaints and consequently a recall ( 21V961000) ON 12-12-2021 FOR GLC 300,2016, But my vehicle did not receive a recall notice. I am concerned regarding possible fire or illness related to fumes being inhaled.

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 unable to discuss the inspection findings with me directly, emphasizing that any communication regarding the investigation should come from Mercedes Benz USA. Despite my numerous attempts to communicate with Mercedes Benz USA through phone calls and emails, seeking information on the inspection findings and requesting a copy of the inspection report, there was no response or communication from the company. This lack of response and communication from Mercedes Benz left me deeply unsettled. However, I wish to update you that on August 31st, Mercedes Benz USA finally responded to my inquiries. While I appreciate their belated response, the substantial delay in communication further exacerbated my concerns about the safety of my vehicle and the responsibility of the manufacturer. Given the gravity of the incident and the potential risks associated with a steering wheel malfunction, I believe it is imperative that this matter is taken seriously and addressed promptly.

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.