2018 Mercedes-Benz C-Class problems, complaints & recalls
NHTSA has received 130 owner complaints about the 2018 Mercedes-Benz C-Class, or 14.8 per year on the road — far fewer complaints than typical (complaint index 0.37, where 1.00 is the average of all tracked vehicles). Among the 76 model-year 2018 vehicles we track, it ranks #26 of 76 by complaints per year (#1 = fewest). Against other Mercedes-Benz models its rate is 50% higher; against other Luxury sedans it is 204% higher.
Counts are normalized by time on the road, not by sales volume: a popular model generates more reports than a rare one, and complaints are not verified individually. How we count
Complaints filed between 2018-06-19 and 2026-09-16. Median delay from incident to filing: 14 days.
Analysis
The following model year (2019) drew 10.1 per year, fewer than this one. In its first two years on the road the 2018 model collected 28 complaints, 67% lower than the average vehicle of the same model year.
The most common problem area is Engine (30.8% of complaints), followed by Body & structure (15.4%) and Unspecified or other (15.4%). 5 reports (3.8%) describe a crash or fire; owners mention 2 injuries and 0 deaths.
Half of the reported incidents happened within 62 months of the model year's start; the busiest period was after five years (54% of incidents). In the last 12 months 13 new complaints were filed, versus 10 in the 12 months before — up 30%.
NHTSA lists no safety recalls for this model year.
Complaint index
- vs. all tracked vehicles0.37
- vs. other Mercedes-Benz models1.5
- vs. other 2018 models0.31
- vs. other Luxury sedans3.04
- Complaints in first 2 years on the road · vs. same-year average (28)0.33
- #26 of 76 · 2018Rankings ›
1.00 means the same rate as the comparison group. 2.00 means twice as many complaints per year on the road.
What owners complain about
vs. all vehicles: 1.00 = All-vehicle average
Problem areas: Engine · Electrical · Body & structure
When complaints were filed
- Crashes reported: 5
- Fires reported: 0
- Injuries: 2
- Deaths: 0
Vehicle age at incident
Median age at incident: 62 months
What owners report
I am wanting to add information to my original complaint. Tracking#11589822 When I called in the electrical issue to AAA the agent said this is a common problem on these cars.
While I was driving to work in a heavy rain my abs malfunction light came on in my car. I decided to take it to the Mercedes-Benz dealership in Fresno. They said it was the ABS module that needed to be replaced.
Sunroof causing dangerous pinch conditions. Roof tracks break and cause pinch areas with partial opening of roof
The contact owns a 2018 Mercedes-Benz C-300. The contact stated that while driving 70 MPH South on the interstate towards Miami, the front panel detached without warning.
I have begun noticing symptoms of the adhesive failing, such as excessive wind noise coming from the front roof area and visible gaps/separation between the panel and the vehicle body.
Excerpts from complaints filed with NHTSA, trimmed for length. The ODI number is NHTSA's record identifier.
Segment peers · 2018 · Luxury sedans
| Models | Complaints | Complaints per year on the road | Complaint index |
|---|---|---|---|
| 2018 Lexus ES | 15 | 1.7 | 0.04 |
| 2018 Audi A4 | 51 | 5.8 | 0.14 |
| 2018 BMW 3 Series | 59 | 6.7 | 0.17 |
| 2018 Mercedes-Benz E-Class | 68 | 7.7 | 0.19 |
| 2018 BMW 5 Series | 80 | 9.1 | 0.23 |
| 2018 Mercedes-Benz C-Class | 130 | 14.8 | 0.37 |
Safety recalls (0)
No recalls on record for this model year.
Investigations
No NHTSA investigation covers the tracked model years.