IN 3 OCCASIONS (WITHIN 2 YEARS DURATION) WHEN I BRAKED THE CAR (BRAND NEW 2012 X3 2.8I) GENTLY TO STOP IT, IT SLOWED DOWN FIRSTLY BUT ALL IN A SUDDEN IT ACCELERATED WITH ENGINE REVVED UP (WITH NOTICEABLE ENGINE NOISE), THE BRAKE SEEMED LOSING POWER AT ALL. THE FIRST TWO TIMES I COULD BE ABLE TO STOP IT (BY FLOORING THE BRAKE) BEFORE HITTING THE ROADBLOCK AND THE CARPARK ENTRANCE GATE, THE THIRD TIME I COULD DO NOTHING BUT HIT INTO ANOTHER CAR IN THE CARPARK DUE TO THE SHORT DISTANCE. I'M SURE THAT I WAS NOT PRESSING THE GAS PEDAL ACCIDENTALLY FOR I WAS IN THE PROCESS OF PRESSING THE BRAKE TO STOP THE CAR IN ALL THREE CASES. I FOUND A SIMILAR RECALLS FM MY LOCAL TRANSPORTATION AUTH (REF: HTTP://WWW.TD.GOV.HK/FILEMANAGER/EN/CONTENT_1179/10000456_E.PDF AND HTTP://WWW.TD.GOV.HK/FILEMANAGER/EN/CONTENT_1179/10000457_E.PDF) WHICH MAY RELEVANT TO MY ISSUE, BUT UNFORTUNATELY MY CAR NOT IN THE LISTED VIN RECALL. I HAD TALKED WITH THE LOCAL BMW SERVICE GUY AND SHE DENIED THE PROBLEMS ARE RELEVANT (WHICH COSTED AROUND US$15,000 TO DO THE AUTO REPAIR EVENTUALLY, COVERED BY INS).