Mercedes-Benz C300 problems by model year
NHTSA holds 10 or more owner complaints for 17 Mercedes-Benz C300 model years between 2008 and 2024, 3,987 complaints in all; the 2008 (672) drew the most. The counts are from NHTSA's complaints file of November 11, 2026; complaints are owner reports, not proven defects, and the counts also reflect each year's age and sales.
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Mercedes-Benz C300 complaints, mileage and recalls by model year
Each row is a Mercedes-Benz C300 model year with 10 or more owner complaints in NHTSA’s complaints file of November 11, 2026. Its page gives the mileage when owners reported problems, the most-reported components and the recall campaigns NHTSA’s recall files list. A median is given with 10 or more mileages; medians rise with a year’s age, so the table does not rank the years.
| Model year | Owner complaints | Listing mileage | Median mileage | Recall campaigns listed |
|---|---|---|---|---|
| 2008 C300 | 672 | 410 | 78,858 | 7 |
| 2009 C300 | 576 | 353 | 70,000 | 8 |
| 2010 C300 | 453 | 209 | 65,300 | 6 |
| 2011 C300 | 480 | 141 | 79,000 | 6 |
| 2012 C300 | 267 | 74 | 82,000 | 6 |
| 2013 C300 | 262 | 75 | 80,000 | 6 |
| 2014 C300 | 94 | 21 | 27,000 | 5 |
| 2015 C300 | 382 | 165 | 49,000 | 11 |
| 2016 C300 | 291 | 70 | 40,000 | 13 |
| 2017 C300 | 216 | 59 | 28,000 | 15 |
| 2018 C300 | 112 | 23 | 50,000 | 18 |
| 2019 C300 | 70 | 24 | 19,500 | 17 |
| 2020 C300 | 34 | 12 | 28,722 | 9 |
| 2021 C300 | 16 | 3 | Under 10 mileages | 7 |
| 2022 C300 | 25 | 5 | Under 10 mileages | 9 |
| 2023 C300 | 23 | 7 | Under 10 mileages | 9 |
| 2024 C300 | 14 | 0 | Under 10 mileages | 3 |
Every model year together: Half of the 1,651 NHTSA owner complaints on the Mercedes-Benz C300 that list mileage came after 65,000 miles (NHTSA complaints file of November 11, 2026). How many miles will a Mercedes-Benz C300 last? →
How to read these numbers
- A higher count is not proof of a worse vehicle. Complaint volume rises with sales volume and with years on the road, and recent model years have had less time to collect complaints.
- NHTSA publishes owner reports without verifying them. A complaint is an allegation, not a defect finding.
- A complaint mileage is the odometer when an owner reported a problem, not how long the vehicle lasted.
- The make, model and model year are the ones on each complaint. NHTSA records them as filed, so a few complaints sit under a model year the name was not sold in.
- The recall count is the number of campaigns NHTSA’s recall files list under these names for the model year. Recalls can be filed under another name, and a campaign covers a production range: check the VIN with NHTSA’s free recall lookup.
- NHTSA also holds 7 complaints for 2 other model years with fewer than 10 each; those years have no page.
- NHTSA names counted: C300, C 300 and C 300 4MATIC. NHTSA files some vehicles under several names (a series name and a trim name, for example); this page counts only these.
Primary sources behind this page
Open the underlying public source and verify that its scope matches the question you are asking.
- NHTSA complaints flat file (FLAT_CMPL.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- Complaints file field layout (CMPL.txt)National Highway Traffic Safety Administration
- NHTSA recalls flat file (FLAT_RCL_PRE_2010.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- NHTSA recalls flat file (FLAT_RCL_POST_2010.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- Recalls file field layout (RCL.txt)National Highway Traffic Safety Administration
- NHTSA recall and complaint datasets: scope and documentationNational Highway Traffic Safety Administration
- Recalls Lookup by VINNational Highway Traffic Safety Administration
NHTSA’s complaints file was downloaded on November 11, 2026 (FLAT_CMPL.txt, dated 2026-11-11 10:15, 2,265,416 rows), with its recall files (FLAT_RCL_PRE_2010.txt and FLAT_RCL_POST_2010.txt, dated 2026-11-11 08:02). Each complaint is counted once, by its NHTSA number, with the model year and mileage of its first row; a model year has a page only with 10 or more complaints. The collection script and its rules are in scripts/collect-nhtsa-model-year-longtail.mjs.
Mercedes-Benz C300 questions
Which Mercedes-Benz C300 model year has the most complaints?
NHTSA holds 10 or more owner complaints for 17 Mercedes-Benz C300 model years between 2008 and 2024, 3,987 complaints in all; the 2008 (672) drew the most. The counts are from NHTSA's complaints file of November 11, 2026; complaints are owner reports, not proven defects, and the counts also reflect each year's age and sales.
Do complaint counts mean the C300 is a bad vehicle?
No. NHTSA complaints are unverified owner reports, and the count rises with how many vehicles were sold and how long they have been on the road. They are useful for comparing model years of one model, which is what this page does, not for ranking one model against another.
How do I check a specific Mercedes-Benz C300 before buying?
Take the 17-character VIN from the vehicle and run it through NHTSA's free recall lookup, which reports open recalls within its coverage. For the vehicle's own past, VIN Lookup sells the original ClearVIN PDF for $14.99: title brands, odometer readings, accident and auction records on file for that VIN.