INVOLVED IN A MINOR ACCIDENT ON SEPTEMBER 29, 2015 THAT MAY HAD BEEN CAUSED BY BRAKE FAILURE ON SEPTEMBER 30 THE BRAKES MALFUNCTIONED AND DEALER DIAGNOSED A BRAKE ACTUATOR MALFUNCTION. ON DECEMBER 16, 2013 AT 68,490 MILES THIS CAR ALSO A COMPLETE AND SUDDEN FAILURE OF THIS SAME PART, NO ACCIDENTS INVOLVED WITH THIS FAILURE. IT WAS REPAIRED AT THE DEALER. THE PREMATURE FAILURE OF THE BRAKE BOOSTER ASSEMBLY SHOULD BE INVESTIGATED ON HYBRIDS SINCE THE INABILITY TO BRAKE THE CAR CAN LED TO A FATAL ACCIDENT.