2009 Mercedes-Benz C300 Other or unknown Problems
- Complaints
- 31about this part
- Share
- 5%of 576 total for the year
- Median mileage
- 79,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 31 complaints about the other or unknown of the 2009 Mercedes-Benz C300, 5% of the 576 complaints for this model year. Where a mileage was given, the median is 79,000 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My car every so often won?t start battery is good starter is good just does nothing happened over 10x had it towed to 5 mechanics shops and mercedes can?t diagnose problem because after a day maybe two sometimes 4 or 5 the car will just start up on its own and then a few weeks or months we go through it all over again researched and other mercedes C300 drivers have the same problem for months and its the steering lock module.”
NHTSA complaint #11326438, filed 2020-05, 85,000 miles“I got off work last night drove my car home and parked it. This morning when I am about to head to work go into my car and it would not start all my lights came on in the car and even my headlight but it wouldn't start for nothing in the world. So I tryed to get a jump but that still wasn't the problem. Now I have to have it towed to a dealer.”
NHTSA complaint #10811707, filed 2015-12, 81,000 miles“My rear subframe is dropped my airbag lights keep coming on my suspension is terrible because of my suspension my rear subframe had dropped and my light warning for my lights keep coming on”
NHTSA complaint #11351457, filed 2020-08, 191,000 miles“Today I had to go to work andtried to put my car on, to my dismay it would not turn on. All of the other electrical functions worked, like my car locking and unlocking , and the radio working but it kept telling me to remove key from ignition and it wouldnt start. I have done alot of reasearch and there seem to be alot of people with this problem. And I hope we could fix it and have it recalled because it is very expensive to fix.”
NHTSA complaint #10758577, filed 2015-08, 97,000 miles“The information system in my car gave me the symbols for the right back lights. I stopped to check and realized my lights were out. I opened the wiring in the trunk and realized that the brown wire on the outer side burned through the connector and the lamp carrier.”
NHTSA complaint #10534352, filed 2013-08, 52,000 milesOther 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 2009 Mercedes-Benz C300
198 complaintsAir bags
182 complaintsSteering
136 complaintsExterior lighting
118 complaintsSuspension
36 complaintsBody and structure
27 complaintsBrakes
21 complaintsElectronic stability control
20 complaintsEngine
16 complaintsTires
9 complaintsSeat belts
8 complaintsVehicle speed control
8 complaints
← All problems reported for the 2009 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