2016 Mercedes-Benz GLC 300: grinding or squealing brakes

Filed Jan 30, 2023 · Brakes, Fuel system · IA

Raw fuel smell when vehicle is at idle. Breaks are very loud at low temperatures. Very squeaky like metal on metal yet the brakes are like new from Mercedes dealership.

Filed Mar 7, 2022 · Brakes · TX

Continuous problem with brakes squealing very loud. Have had brake pads replaced and taken to dealership multiple times to no resolution. It is a huge problem with how loud it is not to mention unsafe and making me feel uneasy about them giving out at any time. This is ongoing from several years ago

Filed Nov 15, 2019 · Airbags, Driver assistance · 50,000 miles · IN

I purchased this mercedes new in 2016, the brakes have squealed ever since when cold 32 degrees or less.. Once in awhile when warm. 2 we smelled gasoline, we took it to a repair shop, they found two fuel hoses sprayed gas in a mist especially when cold.. 3 there are 3 recalls open on this mercedes, I took it in when the air bag recall arrived at our house, I was told we don't have parts. Our car is out of warranty, it has 56000 miles. I take it to a repair shop run by certified mercedes technicians. Thank god we didn't have a fire with the gas leak. I did smell the gas when moving thru the ventilation system and when sitting and the smell was all around the car.

Filed Apr 1, 2018 · Brakes · 2,000 miles · NJ

Purchased the car new from dealer in march 2016. Brakes squeal in reverse when there's cold weather. The dealer has replaced break pads and rotors 3 times but still the same issue; I've brought it in for the same problem over 4 times. The latest 'fix' was january 2018.

Filed Jan 12, 2018 · Brakes · 1,200 miles · FL

I purchased this SUV march 2016. A few weeks after delivery the brakes started making squeaking sound when I backed out my garage in the morning. Over the past 18 months I have taken to the dealership several times for this problem without resolution. My service adviser shawn and the service department of mercedes benz of delray have tried some fixes but all have proven to be temporary. The noise gets progressively worse after each "fix" unless I bring the vehicle back for another adjustment. Now I am concerned that there may be an underlying safety issue. With the brakes.

Filed Nov 7, 2017 · Brakes · 2,000 miles · KY

Mercedes benz glc300 brakes began to squeal soon after purchase. This was noticed when backing up after vehicle sat for a while, rotors and pads cool. Reported to dealer, but they did not seem concerned or mention any known problem related to glc 300 brake noise. I did not press the issue at the time as I thought it might go away after the pads were broken in. Unfortunately the problem has gotten progressively worse. Now it even squeals when going forward if you lightly apply the brakes, again this is when the pads are cool. The dealer now says that this is not a covered issue, since I have more than 10000 miles. Many references to this issue are easily found on the internet for this particular vehicle.

Filed Oct 27, 2017 · Brakes · 280 miles · VA

The brakes squeal at an incredibly high pitch when in reverse the first few times it is used every morning. The sound is painful. It has been going on since we leased the car in 6/20/2016 it has been taken in to the dealership several times for this problem...never to be fixed. It is now making the same high pitch squeal when you are braking while driving forward.

Filed Jun 8, 2017 · Brakes · MA

Soon after purchasing my glc300 in march 2016 the brakes started squealing badly, both going forward but mostly backing up.after many trips back to dealership they finally told me there was a problem with brake pads. Mercedes came out with a fix and I have had it done 2-3 times and the brake squeal has not been fixed. At this time it is going back again so they can recreate the squeal. From all my research I have found out that they knew there was a problem and it was never disclosed to me when I bought the car, had I know I would never have bought this car. I feel I am left with a problem that may never be fixed. Ironically I have had a 2017 glc300 as a loaner and it also has the same brake squeal while backing up. Again they continue to sell these card knowing they are not fixed.

Filed Apr 18, 2017 · Brakes · 6,000 miles · OH

Squealing brakes! At around 6k miles the brakes starting squealing. It was very loud and embarrassing. We took it in and they replaced the brakes, the issue still persisted. We've since been told the manufacturer accidentally packaged the defective brakes so our defective brakes were replaced with another set of defective brakes. That was six months ago (4/2017 now) and we are still having the squealing issue and have not been of made aware of when the manufacturer will actually have the correct replacement brakes. This is completely unacceptable and gives me absolutely no confidence in the mercedes benz brand.

Filed Mar 29, 2017 · Brakes · 1,000 miles · MD

The vehicle was purchased brand new in march 2016. A couple of months later the vehicle started squeaking whenever it was put in reverse and the brakes applied. The dealer said mercedes was aware of the problem and working on a fix but there was nothing they could do at this time. The squeak became louder and louder over time. It actually would irritate people with the noise it made. After waiting a year the vehicle was brought in for its first service. The dealer reluctantly changed the brake pads and let us take the vehicle home. It screeched the next morning. It was returned to the dealer. They applied some compound on the rotors. That seemed to work for a day or two. It was not an authorized mercedes solution and the dealer did say it may not work. Right now we have a vehicle that screeches loudly and can't get rid of it. Mercedes is still stonewalling yet continues to sell this vehicle.

Filed Feb 3, 2017 · Brakes · 4,000 miles · NC

Leased the car with 4,000 miles on it (it was a loaner) and after driving it for a couple of weeks the brakes started to squeal when backing up. Called service and I was told this was "normal" because of the humidity in the air. Dealt with it for another couple of weeks and called service again. This time I was told there was a "problem" with the brake pads and they were waiting to get them from germany but it was "not a safety issue". I'm very upset that they knew all about this when I leased the car in september 2016 and never said a word about it. Extremely upset by how this is being handled by mercedes. Never did I expect to have a problem like this with a $50,000 car!!!! Mercedes should make due on this and let the customer return the vehicle. Why should I be paying for this vehicle every month and not having this issue fixed? This has definitely put a bad taste in my mouth about mercedes.

Filed Jan 24, 2017 · Brakes · 3,000 miles · CO

I purchased the car in may 2016. By august 2016 the brakes starting squealing very loudly when backing out of garage, parking spot, etc. I took the car to the mercedes dealership in november 2016 and was told they are aware of the problem but there is not fix. I am afraid to use the brakes when I back up because of the hurtful noise. There must at least be a temporary fix?