One problem related to brake squeaking noise has been reported for the 2008 Toyota Prius. The most recently reported issues are listed below.
The contact owns a 2008 Toyota Prius. The contact heard a squeaking noise when he applied pressure to the brake pedal, whether driving the vehicle or while it was stopped. The vehicle was taken to an authorized dealer where the contact was told that the failure was common but it was not repaired. The failure mileage was approximately 30,000 and the current mileage was 60,743.