2012 Toyota Prius: recalls and problems
8 recalls and 725 owner complaints on file with NHTSA. The most-reported problem area is service brakes.
Most common problems
What owners report
The contact owns a 2012 toyota prius. the contact stated that while driving 65 mph and depressing the brake pedal there was a buzzing sound coming from the vehicle and the brake warning light illuminated. the contact stated that after inspecting the vehicle, the brake fluid level was very low. the vehicle was taken to a service center where it was diagnosed and dtc: c1391; was retrieved. the contact was informed that
1. my brake booster failed/malfunctioned. i had to get it repaired/replaced by toyota so it might be with the dealership or thrown out by now. 2. i had to take it in because i had an incident where i was unable to apply the break on the car. i was lucky enough to be in a not busy street and was able to pull over safely. 3. toyota diagnosed the issue and proceeded with the repair. they even have an extended warrantee
The contact owns a 2012 toyota prius v. the contact stated that while driving 65 mph, brake fluid was leaking from the vehicle. while driving over 45 mph, the brake pedal became firm, requiring the driver to exert extra force while depressing the brake pedal; the brakes failed to respond as intended. additionally, a burning and toxic odor was present during the failure. multiple warning lights illuminated on the inst
2012 toyota prius v with 89,662 miles. multiple brake warning lights illuminated, and the vehicle stored diagnostic trouble code c1391, “abnormal leak in accumulator.” the brake booster/accumulator pump is also cycling about every 13 seconds, even when the brake pedal is not being applied. the vehicle and components are available for inspection. my safety concern is that this involves a critical braking-system compo
Crash-test ratings
| Version | Overall | Frontal | Side | Rollover |
|---|---|---|---|---|
| 2012 Toyota Prius 5 HB FWD |
Source: NHTSA recalls, complaints and NCAP APIs, covering PRIUS, PRIUS V, PRIUS PLUG-IN. Last refreshed 2026-09-29.