2011 Toyota Prius service brakes, hydraulic problems
12 owner complaints filed with NHTSA name the service brakes, hydraulic on the 2011 Toyota Prius — 2% of all complaints for this model year.
What owners report
“The contact owns a 2011 Toyota Prius. The contact stated that while driving at an undisclosed speed, the master warning light, ABS, and Brake warning lights illuminated. The vehicle was taken to an independent mechanic, who diagnosed failures with the brake master cylinder and the hydraulic…”
filed Oct 14, 2025
“The contact owns a 2011 Toyota Prius. The contact stated while driving at an undisclosed speed, the traction control, ABS, and brake lights were illuminated. The contact stated that when the brake pedal was depressed, the contact heard air coming from the brake pedal. The vehicle was towed to an…”
filed Jul 17, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes, Hydraulic problems in other Prius years
| Year | Reports | Share |
|---|---|---|
| 2022 Prius | 1 | 4% |
| 2019 Prius | 1 | 3% |
| 2016 Prius | 1 | 1% |
| 2015 Prius | 4 | 2% |
| 2014 Prius | 8 | 4% |
| 2013 Prius | 6 | 1% |
| 2012 Prius | 12 | 3% |
| 2010 Prius | 849 | 30% |
| 2009 Prius | 91 | 18% |
| 2008 Prius | 171 | 11% |
| 2007 Prius | 145 | 7% |
| 2006 Prius | 94 | 7% |
Other reported problem areas on the 2011 Toyota Prius
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.