2021 Tesla Model S service brakes problems
16 owner complaints filed with NHTSA name the service brakes on the 2021 Tesla Model S — 9% of all complaints for this model year.
What owners report
“The contact owns a 2021 Tesla Model S. The contact stated that while driving at various speeds with the cruise control feature engaged, the brakes independently activated without the brake pedal being depressed. No warning light was illuminated. The local dealer was contacted; however, the vehicle…”
filed Aug 12, 2026
“I noticed it happened before but I couldn't quite figure out what happened! I was driving down the local road and got ready to go under a overpass and next thing u know my EV just slammed on brakes like I was about to hit someone! Seatbelt choked me and made me gag! But when I came through this…”
filed May 13, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes problems in other Model S years
| Year | Reports | Share |
|---|---|---|
| 2023 Model S | 5 | 4% |
| 2022 Model S | 11 | 8% |
| 2020 Model S | 6 | 8% |
| 2019 Model S | 7 | 16% |
| 2018 Model S | 25 | 15% |
| 2017 Model S | 25 | 6% |
| 2016 Model S | 53 | 8% |
| 2015 Model S | 21 | 3% |
| 2014 Model S | 10 | 3% |
| 2013 Model S | 21 | 5% |
| 2012 Model S | 1 | 2% |
Other reported problem areas on the 2021 Tesla Model S
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.