10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
29,767 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 2015 Mercedes-Benz C300:

Unsubscribe any time. We don't sell/share your email.

problem #22

Nov 082022

C300

  • miles
Front Roof Panel Discoloring and Detachement

- Canyon Country, CA, USA

problem #21

Dec 182022

C300

  • miles
Glass panoramic sun roof lifted off the vehicle at highway speed, I had to grab the front edge of roof, pull off the expressway. Tried to re seat it in the channels but could not close the roof. Drove 120 miles with roof open holding the front edge down, which continued to try to lift off the vehicle.. My vehicle is Mercedes-€™ 2015 c300. These vehicles have a recall for this very reason but my vin number is not listed. Don-€™t know why? Need to get my vin listed for this recall. Please help!

- Macon, GA, USA

problem #20

May 112022

C300

  • miles
Problem with Panoramic Moonroof. One side will not close. Mercedes is aware of the issue. Price to fix is $2,500. Roof will not close or seal.

- Rural Valley, PA, USA

problem #19

Jul 082021

C300

  • miles
Recall 2021070010----NHTSA #21V197--Panoramic roof not boned correctly to the vehicle during prior replacement -

- Chesterfield, VA, USA

problem #18

Oct 012018

C300

  • miles
Panoramic sunroof off centered causing glass to tilt on one side above vehicle. Note, a recall for the same on models 2015 c300 for vehicles with prior service but same issues/ problems for my vehicle that has not been serviced.

- Irving, TX, USA

problem #17

Jul 082021

C300

  • miles
Panoramic Sunroof has had several problems previously. While driving 65 mph the plastic roof piece between the windshield and sunroof suddenly and unexpectedly dislodged and flew off the car.

- San Rafael, CA, USA

problem #16

Jun 162021

C300

  • miles
Sunroof clips are snapping on many w205 2015 mercedes c300 models causing the panoramic roof to come loose potentially flying off the car while driving this has the potential to hurt many people. Mercedes claims there is only a recall for models up to 2011 however hundreds of thousands of later model vehicles have the same issue. I read an article saying they recently opened a recall for the later models but my vin isn-€™t covered. If the 100 pound panoramic roof flies off while driving on the highway at 70 mph it can definitely kill someone. Please address my concern I cannot afford to come out of pocket for Mercedes defect and lack of help.

- Stamford, CT, USA

problem #15

Mar 162021

C300

  • 55,321 miles
The contact owns a 2015 Mercedes-Benz C300. The contact stated that the vehicle was recently in an accident. The vehicle was repaired at gerber collision & glass (102 corporate park dr, henderson, nv 89074) however, while leaving the collision center, the contact heard a loud knocking sound coming from underneath the vehicle. The contact asked the collision center to inspect the vehicle for the sound however, the collision center declined. The contact then took the vehicle to Mercedes-Benz of henderson service center (925 auto show dr, henderson, nv 89014) to be inspected. The vehicle was not yet diagnosed nor repaired. The manufacturer was made aware of the failure. The failure mileage was 55,321.

- Henderson, NV, USA

problem #14

Apr 272020

C300

  • 71,000 miles
Upon submitting a claim for my "inoperative" sensor issue and the car losing all power at highway speeds. I discovered your claim about panoramic sunroof detachments. Well you are in luck as I have a lovely Mercedes with a roof panel that I had to glue to the track as it came apart. The hinge on right side is loose. I can no longer open the sunroof or it will catch wind as if it's about to dethatch. Driving the sunroof is so loose that it will not close without the help of holding it down so it locks into place. Brought it into the dealer last summer and they brushed it off and tried to charge me over $2,000 to get it fixed. They said "common issue" I would produce pictures, however my car is currently sitting at a Mercedes factory shop getting its other safety issues taken care of.

- River Falls, WI, USA

problem #13

Aug 252020

C300 4-cyl

  • 70,000 miles
There are no open or pending recalls on this VIN. For consideration of any part that is out of manufacturer warranty, it will first need to be assessed at the dealership level. If further assistance may be required, you can then contact the customer assistance center for further review by an executive referral manager. There are many factors in determining any consideration which include but are not limited to the vehicle history, miles, time out of warranty, customer pay, etc. Please be advised that there is no guarantee that assistance will be provided, but you would receive a call within one business day at the number you provide. 2015 C300 4matic panoramic sunroof front panel detachment while driving. The glass flew off and into traffic while I was driving on interstate highway I-25. I live in Colorado springs co. Usa. And maintenance at the local Mercedes Benz there. Question is if there is any visibility to this issue via Mercedes Benz corporate, and if assistance on repairs are a realistic expectation. Failure date: 08/25/2020 the contact owns a 2015 Mercedes-Benz C300. The contact stated that while driving at the speed limit on I-25, the front glass panel detached from the vehicle. The contact stated a true realization of the issue was not fully comprehended when it happened outside of the noise it made at the time of failure, until the contact pulled over once off the highway, and confirmed that the glass panel had detached from the vehicle. The glass panel was not retrieved. The contact referenced NHTSA campaign number: 19V918000 (visibility) as a possible solution for the failure, the failure mileage was approximately 70123. Is assistance for the monetary cost of repair an option. Question reference # 200826-000024 date created: 08/26/2020 09:41 am date last updated: 08/27/2020 08:56 am consumer stated in the latest findings during inspection that they was a manufacturer error and refund would be applicable.

- Colorado Springs, CO, USA

problem #12

Aug 132020

C300

  • 75,000 miles
I started experiencing loud wind noise coming from the top of my car near my windshield when driving over 40mph. I pulled over and examined the area and found that the top left glass panel in front of the sunroof on my 2015 Mercedes Benz C300 was slightly propped up. It seemed to be a possible seal or glue issue causing the glass panel to be slightly loose and allowing air in. I called Mercedes and made the next available appointment for service a few days out. While driving on the freeway, I begun to hear the wind noise again but followed by a loud rip from the roof of my car this time but did not see anything in sight. When I pulled over, the glass panel was completely missing and went flying somewhere on the highway, causing a road hazard. It was torn off the car and the roof of the car is now exposed.

- Auburn, WA, USA

problem #11

Jul 252020

C300

  • 58,000 miles
Front of glass sunroof flew off while driving on freeway - recall exists for older versions of my car. Mine is a 2015

- Ponte Vedra, FL, USA

problem #10

Jul 192020

C300

  • 86,000 miles
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.

- Bradenton, FL, USA

problem #9

Feb 132020

C300

  • 53,000 miles
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!!

- Memphis, TN, USA

problem #8

Jun 202019

C300

  • 37,000 miles
At highway driving speeds in excess of 50 mph, the glass trim panel of the panoramic sunroof vibrates and flaps wildly. It is not securely attached to the roof of the car. I took it to the dealer to have it replaced. It will fly off and hit the vehicle behind me. If the vehicle behind me were a motorcycle, the results would be disastrous.

- Fuquay Varina, NC, USA

problem #7

Jan 182019

C300

  • 30,000 miles
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.

- Jericho, NY, USA

problem #6

Dec 312018

C300

  • 58,400 miles
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

- Maryville, IL, USA

problem #5

Dec 152017

C300

  • 32,000 miles
I was driving at approx. 20-25 mph during day light and all of a sudden there was light blinked on my dashboard for applying the brakes because of another vehicle ahead of me. I applied the brakes as well as brake assist plus system got activated as well. But still my vehicle end up hitting the vehicle ahead of me. The brake assist plus system which is claimed by mercedez to take brake automatically to bring the system to halt in case of emergency did not work and it end up hitting another vehicle in front of my vehicle

- Arcadia, CA, USA

problem #4

Apr 032017

C300

  • 6,800 miles
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

- Tampa, FL, USA

problem #3

Feb 252017

C300

  • 21,000 miles
I was driving 580-E and merging onto I-5 S when I hit a humongous pot hole with my left font tire causing it to immediately blow out. That in-turn caused my stability tracking to engage, which caused me to slow down drastically. That caused another vehicle to near miss ramming me in the back and me side swiping another vehicle. I was driving approximately 70 mph and almost lost control of the vehicle and had to immediately pull over to a very narrow shoulder of the road with my emergency flashers blinking. To ensure the safety of the vehicle, my self and other passengers in the car, I had to drive approximately 0.5 miles to the next exit (67) to safely get my vehicle off the road to a safe location. I then called a tow truck to tow my vehicle back to santa rosa where I live to get the tire replaced and front bump repaired. I am unsure of the cause of the unsafe condition of the highway or what caused the pot hole. There were several cars stranded with damages to their vehicles as well. One person came to the same exit (food mart on patterson road) with a blown out tire as well. I have her contact information if you need to contact her.

- Santa Rosa, CA, USA

Read the next 2 complaints »