Mercedes-Benz C-Class problems, by model year and system
917 complaints owners filed with NHTSA about the Mercedes-Benz C-Class 2016–2027, and the 2 systems the record is deep on — engine (269), fuel system (141). Each system has a page across the years; 3 model-year pages go deeper still. Every figure is a linked federal record; none is a failure rate or a verdict on one car.
The systems the record is deep on
Source: NHTSA complaints, recalls, investigations and manufacturer communicationsMercedes-Benz C-Class complaints, year by system
Source: NHTSA complaint database| Model year | engine | fuel system |
|---|---|---|
| 2027 0 in all | — | — |
| 2026 4 in all | 1 | — |
| 2025 4 in all | — | — |
| 2024 15 in all | 3 | — |
| 2023 26 in all | 3 | 1 |
| 2022 26 in all | 2 | 8 |
| 2021 17 in all | 8 | 3 |
| 2020 46 in all | 9 | 4 |
| 2019 78 in all | 18 | 13 |
| 2018 130 in all | 40 | 10 |
| 2017 253 in all | 85 | 35 |
| 2016 318 in all | 100 | 67 |
Complaints owners filed with NHTSA naming each system, per model year; a bold count links the year’s own page on that system. Counts scale with sales and with time on the road; nothing here is a rate, and NHTSA’s headings are coarse (“Power Train” is the transmission and the driveline).
Common questions
Source: NHTSA complaint databaseWhich Mercedes-Benz C-Class system draws the most complaints?
Engine: 269 complaints across 12 model years, 29% of everything owners filed about the Mercedes-Benz C-Class. A count, not a rate — it says nothing about how many were sold.
Which Mercedes-Benz C-Class year has the most complaints?
2016 (318), 2017 (253), 2018 (130). Older years have had longer to collect them; the year pages show each year's share by system.