2018 Mercedes-Benz C 300 4MATIC Seat belts Problems
- Complaints
- 1about this part
- Share
- 8%of 12 total for the year
- Median mileage
- 59,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the seat belts of the 2018 Mercedes-Benz C 300 4MATIC, 8% of the 12 complaints for this model year. Where a mileage was given, the median is 59,000 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 contact owns a 2018 Mercedes-Benz C300 4Matic. The contact stated that the front passenger's and driver's side seat belts had failed to retract and return to the stowed position. The contact related the failure to NHTSA Campaign Number: 21V032000 (Seat Belts); however, the VIN was not included. The dealer was notified of the failure and informed the contact that there would be a cost for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 59,000.”
NHTSA complaint #11637991, filed 2025-01, 59,000 milesRelated service bulletins
- 10151959Jul 23, 2018Seat belt extender toothed rack sluggish or makes noises
Seat belts: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 1 | 8% |
Other parts of the 2018 Mercedes-Benz C 300 4MATIC
4 complaintsBody and structure
4 complaintsEngine
2 complaintsAir bags
1 complaintsElectrical system
1 complaintsSteering
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2018 Mercedes-Benz C 300 4MATIC
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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