2015 MERCEDES-BENZ S550 — Complaint #2117484
Open-data reference.
NHTSA Complaint about SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES filed August 5, 2025
NHTSA complaint #2117484 (ODI reference 11678585) concerns a 2015 MERCEDES-BENZ S550 and was filed on August 5, 2025. The owner reports the failure occurred on January 15, 2025. The vehicle had 152,000 miles on the odometer at the time of the incident. The report was geocoded to New York based on the filer's self-reported location. The affected component is categorized as service brakes, hydraulic:pedals and linkages, 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 S550 cohort independently describe similar service brakes, hydraulic:pedals and linkages 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 2015 MERCEDES-BENZ S550 shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2015 Mercedes-Benz S550. The contact stated that while driving approximately 45 MPH and approaching a stop, the vehicle experienced a loss of automotive power. Several unknown warning lights were illuminated. There was an abnormal ticking sound coming from the engine, and the brakes squeaked while turning. While refueling the vehicle, there was fuel leaking from the vehicle. The contact stated that while driving and attempting to stop, the brake pedal was depressed and felt loose, and the vehicle hesitated while coming to a stop. The vehicle was restarted and taken to a local dealer; however, the cause of the failure was not yet determined. Several local independent mechanics were contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 152,000.
Complaint Details
| NHTSA Complaint ID | 2117484 |
| ODI Number | 11678585 |
| Date Filed | August 5, 2025 |
| Failure Date | January 15, 2025 |
| VIN | WDDUG8FBXFA |
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.