2021 HONDA CIVIC — Complaint #2164736
Open-data reference.
NHTSA Complaint about SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER filed January 9, 2026
NHTSA complaint #2164736 (ODI reference 11709926) concerns a 2021 HONDA CIVIC and was filed on January 9, 2026. The owner reports the failure occurred on December 19, 2025. The vehicle had 108,000 miles on the odometer at the time of the incident. The report was geocoded to Florida based on the filer's self-reported location. The affected component is categorized as service brakes, hydraulic:foundation components:master cylinder, 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 HONDA CIVIC cohort independently describe similar service brakes, hydraulic:foundation components:master cylinder 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 2021 HONDA CIVIC shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2021 Honda Civic. The contact stated that while driving approximately 37 MPH, the vehicle stalled. The check engine, master cylinder, and adaptive cruise control warning lights were illuminated. The vehicle was taken to a dealer, where it was diagnosed and determined that the brake master cylinder, fuel pump, and ignition coils needed to be replaced. The contact researched and was made aware of an unknown recall; however, the VIN was not under recall. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 108,000.
Complaint Details
| NHTSA Complaint ID | 2164736 |
| ODI Number | 11709926 |
| Date Filed | January 9, 2026 |
| Failure Date | December 19, 2025 |
| VIN | 2HGFC1F32MH |
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.