2012 MERCEDES-BENZ C300 — Complaint #1840735
Open-data reference.
NHTSA Complaint about SUSPENSION:SUBFRAME/MOUNTING BRACKET filed September 14, 2022
NHTSA complaint #1840735 (ODI reference 11484481) concerns a 2012 MERCEDES-BENZ C300 and was filed on September 14, 2022. The owner reports the failure occurred on September 3, 2022. The vehicle had 149,000 miles on the odometer at the time of the incident. The report was geocoded to Pennsylvania based on the filer's self-reported location. The affected component is categorized as suspension:subframe/mounting bracket, one of NHTSA's standardized taxonomy codes used to group defect patterns across make, model, and year.
The filer flagged the following severity indicators: crash: no, fire: no, injuries: 0, fatalities: 0. No crash, fire, or fatality was associated with this report, which places it in the early-warning stream rather than the priority-review stream. Because a VIN was supplied, this complaint is tied to a specific vehicle and not just a model-year cohort.
Individual complaints are consumer-submitted and unverified by NHTSA engineers — the agency's role at this stage is to collect, index, and make them searchable. What matters for federal action is the pattern: when many owners of the same MERCEDES-BENZ C300 cohort independently describe similar suspension:subframe/mounting bracket failures, defect investigators have grounds to open a PE and request manufacturer data. Related filings for the same vehicle and component appear below, and the detail page for the full 2012 MERCEDES-BENZ C300 shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2012 Mercedes-Benz C300. The contact stated while driving 25 MPH going downhill, the rear end of the vehicle shifted independently to the right. The contact stated no warning light was illuminated. The contact was able to continue driving at a slow speed to her destination. The contact stated her husband inspected the vehicle and became aware that the rear subframe cross member had fractured due to corrosion. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had been informed of the failure. The failure mileage was approximately 149,000.
Complaint Details
| NHTSA Complaint ID | 1840735 |
| ODI Number | 11484481 |
| Date Filed | September 14, 2022 |
| Failure Date | September 3, 2022 |
| VIN | WDDGF8BB6CR |
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Source: NHTSA Vehicle Complaints Database. Component taxonomy and severity codes are standardized by NHTSA Office of Defects Investigation.
Read our methodology — how this data is sourced, computed, and verified.