VEHICLE WAS STATIONARY IN MY DRIVEWAY, WAS NOT STARTED AND WAS UNATTENDED, HAD NOT BEEN STARTED IN OVER A WEEK AND KEYS WERE NOT IN THE VEHICLES. THE VEHICLE SPONTANEOUSLY BURST INTO FLAMES WHICH BURNED THE ENGINE BAY AND FRONT END OF THE CAR BEFORE THE FIRE DEPT. ARRIVED AND EXTINGUISHED THE FIRE WITH FOAM. THE CAR HAD BEEN SITTING UNSTARTED FOR OVER A WEEK. I AM UNSURE OF WHAT CAUSED THE FIRE AND BECAUSE OF THE EXTENSIVE DAMAGE TO THE ENGINE BAY I COULD NOT DETERMINE WERE THE FIRE ORIGINATED. PERHAPS A PROFESSIONAL FIRE EXAMINER COULD DETERMINE THAT. I AM BLESSED THAT THIS DID NOT HAPPEN WHILE PARKED IN MY GARAGE BUT WAS SCARY. I JUST WANT THIS INCIDENT ON RECORD SO THAT OTHERS WHICH OWN THIS PARTICULAR TYPE OF VEHICLE CAN BE WARNED ABOUT THE POTENTIAL DANGERS. I HAVE OWNED THIS VEHICLE SINCE NEW AND HAD A COUPLE OF UPDATES DONE PER BMW SUCH AS THE TAILPIPES AND TIMING CHAIN IN THE ENGINE. I WAS NOT AWARE OF ANY ADDITIONAL RECALLS OR UPDATES BUT APPARENTLY THERE HAVE BEEN SOME INCIDENCES OF FIRES SUCH AS MINE WHICH I LEARNED ABOUT AFTER SEARCHING THE INTERNET TO SEE IF SIMILAR ISSUES HAD BEEN DOCUMENTED. I WILL ATTACH A FEW PICTURES FOR YOU TO HELP WITH YOUR ASSESSMENT. THANK YOU FOR YOUR TIME AND CONSIDERATION. I HOPE THIS INFORMATION WILL BE SOME HELP TO OTHERS IN PREVENTING A SIMILAR SITUATION. I THANK GOD NO ONE WAS INJURED OR PROPERTY DAMAGED OTHER THAN MY CAR. THE FIRE DEPARTMENT MADE A REPORT BUT IT DID NOT INCLUDE INVESTIGATING THE CAUSE JUST A RESPONSE