2019 Mercedes-Benz C300 Other or unknown Problems
- Complaints
- 10about this part
- Share
- 14%of 69 total for the year
- Median mileage
- 9,777miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 10 complaints about the other or unknown of the 2019 Mercedes-Benz C300, 14% of the 69 complaints for this model year. Where a mileage was given, the median is 9,777 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The panorama sunroof exploded, no other cars near me, no rock hit it no big bump in the road, it just exploded...was traveling at normal highway speed, and it sounded like the car had exploded, very scary, and if the inside cover had not been closed would have had glass shards rain down on me and possible get in my eyes...mercedes needs to address this problem right away before people get into accidents when this happens.”
NHTSA complaint #11291475, filed 2019-12, 11,550 miles“I think the recall is on communication software. I contacted Mercedes Benz many times in the past 2 years. Mercedes Benz asked its dealer to do the recall but dealer said they cannot do it. Mecedes Benz also said their software supplier had not found a solution yet.”
NHTSA complaint #11698435, filed 2025-11“The manufacturer recalled car due communication module's SIM card software problem more than 2 years ago. I went to the dealer where I bought the car and also contacted the manufacturer several times but still have not been able to solve the problem.”
NHTSA complaint #11625732, filed 2024-11“I am writing to formally report an ongoing issue and safety concern with my vehicle. Since the day I purchased the car, I have experienced numerous mechanical problems and have spent a significant amount of money on repairs. In August, I had to take my vehicle to a local repair shop three times due to persistent issues. The car was also towed by AAA three separate times for safety reasons. My main concern is that the vehicle hesitates during acceleration and feels sluggish while driving, which creates a serious safety risk on the road. …”
NHTSA complaint #11691362, filed 2025-10“Dear friends, I have received a safety recall message and contacted to my car dealership. Despite I called few times to different Mercedes my dealership (Mercedes DTLA, Mercedes Corporate office) the recall issue has not been fixed. It has been 3 months since I am calling them and requesting to fix the recall as I am psychologically uncomfortable when I have recalls in my car. Unfortunately, recall on my car has not been fixed and they are not able to give me any answer when this issue will be fixed. …”
NHTSA complaint #11419977, filed 2021-06Related service bulletins
- 11035780Aug 4, 2026Complaint Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF 236.17 due to a global supply constraint. 236.17 ATF 1L and 5L…
- 11028809Feb 13, 2026Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the TIREFIT sealant bottle may not meet specifications. The…
- 10179966Jul 31, 2020Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
- 10178712Jul 2, 2020Message in the Instrument Cluster "Refill 1L Oil at the Next Fuel Stop"
- 10205156Aug 26, 2016Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit.
- 10205154Aug 5, 2016Gasket may settle causing a slight oil leak.
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 3 | 27% |
| 2023 | 4 | 18% |
| 2022 | 2 | 8% |
| 2020 | 5 | 15% |
| 2019 | 10 | 14% |
| 2018 | 23 | 23% |
| 2017 | 36 | 17% |
| 2016 | 65 | 22% |
| 2015 | 63 | 17% |
| 2014 | 8 | 9% |
| 2013 | 19 | 7% |
| 2012 | 23 | 9% |
| 2011 | 33 | 7% |
| 2010 | 27 | 6% |
| 2009 | 31 | 5% |
| 2008 | 38 | 6% |
Other parts of the 2019 Mercedes-Benz C300
17 complaintsElectrical system
13 complaintsFuel system
12 complaintsBody and structure
7 complaintsBrakes
6 complaintsTransmission and drivetrain
6 complaintsSeat belts
5 complaintsSteering
5 complaintsBack-over prevention (rear camera)
3 complaintsForward collision avoidance
3 complaintsVehicle speed control
3 complaintsAir bags
1 complaints
← All problems reported for the 2019 Mercedes-Benz C300
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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