I HAVE OWNED THIS VEHICLE FOR THREE YEARS AND THE POWER BRAKES HAVE FAILED THREE SEPARATE TIMES. EACH TIME THIS HAPPENS THE PEDAL IS EXTREMELY HARD TO PUSH AND WILL NOT GO DOWN. EACH TIME I WAS DRIVING IN CITY TYPE TRAFFIC. I HAVE TAKEN THE CAR TO JIM ELLIS MAZDA IN MARIETTA GA. THEY WERE UNABLE TO DUPLICATE THE PROBLEM AND RECOMMENDED A BRAKE FLUID FLUSH HAVING SAID THE FLUID WAS DIRTY. ALSO SAID I NEEDED REAR BRAKE PADS DUE TO WEAR BUT THEY WERE FINE.I DID REPLACE THEM WITH NEW AS A PRECAUTION AS I AM A RETIRED AUTOMOTIVE TECHNICIAN. I WILL ATTACH A PHOTO OF THE PADS.THE CAR HAS 49000 MILES ON IT AND WAS PURCHASED CERTIFIED PRE OWNED IN OCTOBER 2016. MY WIFE IS AFRAID TO DRIVE THIS CAR NOW SINCE WE DON'T KNOW WHEN THIS MAY OCCUR AGAIN. EACH TIME THE BRAKES FAILED IT WAS HOT WEATHER AND THE OCCURRENCE WAS SEPT 2ND 2019.