One problem related to brake fluid leak has been reported for the 2007 Toyota Prius. The most recently reported issues are listed below.
Vehicle is leaking brake fluid due to a failed brake actuator. Brakes failed due to the issue. I was told there was a prior extended warranty, but I never received the notification. Toyota gave me address and it was mailed to my old home. Vehicle is now 2 months past the extended warranty date. I feel this is a major safety issue and should have been handled as a recall and not an extension of warranty.