2021 Honda Passport service brakes problems
20 owner complaints filed with NHTSA name the service brakes on the 2021 Honda Passport — 15% of all complaints for this model year.
What owners report
“I purchased a used 2021 Passport the end of May 2025. While driving, the 'collision mitigation braking system' or CMBS would activate the braking system and would intermittently just brake, causing panic for not only myself, but I'm sure drivers behind me for suddenly braking with no imminent…”
filed Mar 19, 2026
“Concerns with the brake master cylinder and brake booster. Bolts not torqued enough during manufacturing. I had an independent inspection completed on 6/4/25. Technician determined the bolts were not torqued properly. Concern is my brakes could fail causing fatal crash”
filed Jun 9, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Tie rod fastener that connects the brake booster and the brake master cylinder may have…Campaign 23V458000 · Jun 29, 2023
Service Brakes problems in other Passport years
| Year | Reports | Share |
|---|---|---|
| 2026 Passport | 4 | 8% |
| 2025 Passport | 2 | 7% |
| 2023 Passport | 9 | 26% |
| 2022 Passport | 8 | 15% |
| 2020 Passport | 8 | 9% |
| 2019 Passport | 23 | 9% |
Other reported problem areas on the 2021 Honda Passport
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.