2021 Nissan Sentra service brakes problems
23 owner complaints filed with NHTSA name the service brakes on the 2021 Nissan Sentra — 18% of all complaints for this model year.
What owners report
“AEB system is initiating emergency braking at random times. Both on surface street, and the freeway on ramp. With and without weather, and without any obstacles or cars in the way. The vehicle comes it a complete stop when this happens and puts the driver in significant danger. At this point the…”
filed Jan 29, 2026
“Since having my Nissan 2021 Sentra I have for one, had to replace the battery in it twice. On a more serious note, it is now stopping the car at random and unnecessary times stating an object is in front of me. It happens once a while ago and I did not have any other signs, and it was just for a…”
filed Oct 7, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes problems in other Sentra years
| Year | Reports | Share |
|---|---|---|
| 2025 Sentra | 1 | 4% |
| 2024 Sentra | 4 | 13% |
| 2022 Sentra | 4 | 5% |
| 2020 Sentra | 25 | 12% |
| 2019 Sentra | 37 | 17% |
| 2018 Sentra | 38 | 21% |
| 2017 Sentra | 21 | 9% |
| 2016 Sentra | 18 | 7% |
| 2015 Sentra | 17 | 5% |
| 2014 Sentra | 33 | 9% |
| 2013 Sentra | 95 | 15% |
| 2012 Sentra | 5 | 3% |
Other reported problem areas on the 2021 Nissan Sentra
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.