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Other or unknownPart report

2015 Mercedes-Benz C300 Other or unknown Problems

Complaints
63about this part
Share
17%of 381 total for the year
Median mileage
29,750miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 63 complaints about the other or unknown of the 2015 Mercedes-Benz C300, 17% of the 381 complaints for this model year. Where a mileage was given, the median is 29,750 miles.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“My panarama sunroof just fail and almost collapse on me. My car is 5 years old. I was driving and it appear the glass was coming out. The vehicle was stationary. I'm afraid that the glass will pop out and fall on me. This is serious. It could harm me if it falls on me.”

NHTSA complaint #11338824, filed 2020-07, 20,340 miles

“When driving on the bridge the piece of my sunroof flew off I pulled over it was raining and the inside of my car got wet the motor on my sunroof no longer works as the water leaked through. I picked up as much of the pieces as I could but the part was run over.”

NHTSA complaint #11351629, filed 2020-08, 56,023 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!!”

NHTSA complaint #11310988, filed 2020-02, 53,000 miles

“Two issues, purchased a certified pre owned vehicle. At 8900 miles, we noticed the car was idling very rough on a cold start, almost the sound of a diesel. The sound would resolve after 10 minutes of driving. Service informed us that there was a recall on the rods and pistons. We had the engine rebuilt, and the noise is the same, if not worse. The car sounds nothing like laterbuild '15 models or '16 models, nor does it run as smoothly. …”

NHTSA complaint #10825382, filed 2016-02, 8,500 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. …”

NHTSA complaint #10958331, filed 2017-03, 21,000 miles

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2024327%
2023418%
202228%
2020515%
20191014%
20182323%
20173617%
20166522%
20156317%
201489%
2013197%
2012239%
2011337%
2010276%
2009315%
2008386%

Other parts of the 2015 Mercedes-Benz C300

Engine
127 complaints
Fuel system
70 complaints
Body and structure
60 complaints
Electrical system
50 complaints
Steering
23 complaints
Suspension
22 complaints
Transmission and drivetrain
20 complaints
Visibility (wipers, defrost, mirrors)
16 complaints
Air bags
12 complaints
Brakes
9 complaints
Forward collision avoidance
8 complaints
Wheels
8 complaints

← All problems reported for the 2015 Mercedes-Benz C300

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology