2012 Toyota Prius vehicle speed control problems
13 owner complaints filed with NHTSA name the vehicle speed control on the 2012 Toyota Prius — 3% of all complaints for this model year.
What owners report
“Unknown. There were a multitude of codes that appeared on the diagnostics causing problems with engine. The temperature, brake, tire sensor lights are all on. The cruise control is not working. White smoke emitting from tail pipe and engine. Main engine coolant leaking. Car overheating rapidly.”
filed Jul 6, 2026
“The brake, abs, and stability control light come on and the brakes require more pressure to work . getting a code C1391 Abnormal Leak in the Accumulator. but I was never informed of this recall and there are no open recalls associated with my car”
filed Aug 12, 2021
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Vehicle Speed Control problems in other Prius years
| Year | Reports | Share |
|---|---|---|
| 2024 Prius | 2 | 9% |
| 2022 Prius | 1 | 4% |
| 2019 Prius | 4 | 14% |
| 2018 Prius | 4 | 11% |
| 2017 Prius | 13 | 14% |
| 2016 Prius | 13 | 8% |
| 2015 Prius | 7 | 4% |
| 2014 Prius | 14 | 7% |
| 2013 Prius | 21 | 5% |
| 2011 Prius | 28 | 5% |
| 2010 Prius | 287 | 10% |
| 2009 Prius | 71 | 14% |
Other reported problem areas on the 2012 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.