2015 Mercedes-Benz C300: sunroof shattered

Filed Jul 8, 2025 · Visibility · TX

Failed component: Front Sunroof Clip What component or system failed or malfunctioned, and is it available for inspection upon request? Sunroof clip, yes. How was your safety or the safety of others put at risk? The glass pane lifted while the car was in motion and had to be held down to secure it until the car stopped. 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? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No While merging to enter the freeway at approx 45-50 mph I opened my sunroof. At about halfway back the glass began to lift up off the track/railing as if it was going to fly off the track. Had I not been holding the button to open the sunroof I would not have noticed and the entire glass pane would have blown off, possibly damaging the car or worse flying off and hit another car. I had to hold the glass in place to keep it from flying off until I was able to exit the freeway. Once I stopped the car to inspect the sun roof I noticed the clip that secures the glass to the track was broken (crumbled) in the sunroof track. I removed the pieces of broken plastic from the track and was then able to close the sunroof. I am now unable to safely open my sunroof while the vehicle is in motion.

Filed Jun 6, 2025 · Visibility · CA

Panoramic glass sliding plastic brackets broke off while driving at 25-35 mph Lifting up the glass off the vehicle. Quick reaction saved the large detached glass from flying off into the roadway injuring or killing someone. Vehicle was 5 years old and out of warranty. Dealer estimated repair cost at $2500

Filed Apr 12, 2025 · KS

Sunshade on panoramic sunroof broke off and tore sunshade. Took it to MB service center and was told it is known issue for that model and many more with some part snapping off causing the damage and cost to repair is between 2500-3000. Have been reading online and lot of people seem to have same issue with the panoramic sunroof and shade not syncing together. Seems to be concern manufacturer should be looking at if there’s numerous vehicle with same issues. Part snapped off when trying to open up sunroof on hot summer day

Filed Mar 11, 2025 · Visibility · SC

Panoramic roof explode sound like a gunshot but the roof exploded

Filed Jul 19, 2020 · Body · 86,000 miles · FL

On july 19, 2020, I was driving my mb c300, on highway 301 in bradenton florida. Suddenly, I heard what sounded like a gunshot. I was terrified. Once, I calmed down and was able to get to a safe location, upon examination, I discovered that my sunroof had spontaneously shattered. There was absolutely no evidence of any type of foreign object causing the sunroom to shatter. Fortunately, when the loud bang occurred, I had the presence of mind to not lose control of my car in what could have caused an accident. Also, if the sunroof had been partially opened the glass chards could have caused significant injury. This is completely and utterly unacceptable. Mercedes benz is a luxury car manufacturer, known for superior engineering. This should not have happened, under any circumstances.

Filed Feb 23, 2020 · Body · 53,000 miles · TN

I was driving on 02/13/2020, about to cross the arkansas/tennessee bridge when my sunroof exploded without an explanation. The entire panoramic sunroof shattered. It was the most frightening thing I have ever experience. If my sunroof screen had been open, all of the glass would have fallen on my head and in my eyes. Called the mb dealer for help, they weren't willing to help and suggested that I file it with my own insurance company. This is a defect of mb!!

Filed Jan 21, 2019 · Body · 30,000 miles · NY

Exploding panoramic roof. On january 18, 2019, two hours into driving from new york to canada for a family vacation, without any warning and for no apparent reason the panoramic roof to our 2015 mercedes benz c300 4matic suddenly and violently exploded. At the time of the occurrence the highway road (i84e)was straight, smooth and we were at cruising speed (60mph), no cars anywhere near us in front or from the rear. The explosion sounded as if a bomb had gone off or if we had been shot. Tiny glass particles sprayed my entire family including my wife, 2 daughter (12,15) and our puppy. Luckily the sunshade covering underneath the glass roof caught the larger pieces of broken glass. After making sure the family was not injured I managed to find a large piece of cardboard that I duct tape to the roof and slowly made our way back home, ending our trip. Upon arriving home I did lots of research and to my surprise found that exploding panoramic roofs was more common than I had ever thought with many owners gone through the exact situation as I. Yet, mercedes refuses to acknowledge this issue and presently does not have a recall on their problem. To add insult to injury when I brought the vehicle to the dealership for a repair, the service advisor acted as if this was no big deal and also that he has never seen this issue in his 34 years of being there. I can only assume that this is a false statement since the vallet person who took my car said he has seen it on quite a few occasion. Mercedes benz of north america needs to address this situation before it becomes a fatal mishap. The sound and glass debris could have easily distracted me enough for me to lose control of the vehicle and cause an accident. Luckily no one was near our car.

Filed Dec 31, 2018 · Body · 58,400 miles · IL

Panoramic sunroof spontaneously exploded while the car was sitting. Mercedes claiming something fell into it, but there was nothing above it or in the car while it was sitting in the garage. After reading online, this is happening to a lot of other consumers, including one who has started a class action lawsuit in california

Filed Apr 3, 2017 · Body · 6,800 miles · FL

My sunroof exploded/shattered while I was driving today, traveling at a speed of 45mph on city road after turning a corner. Outside temp was around 85 and inside car was 75. Car has around 6800 miles, and there was nothing that hit the sunroof. Scary situation for the driver! Car is currently under warranty and at the dealer for repair, but they want my insurance to pay. I insist this be investigated because I believe it to be a manufacture defect