VEHICLE WAS PARKED WITH ENGINE OFF AND SPONTANEOUSLY COMBUSTED. ***I HAVE VIDEO FOOTAGE OF THE ENTIRE ORDEAL. ***** THE CAR HAD BEEN PARKED FOR ROUGHLY 4 HOURS PRIOR TO FIRE STARTING UNDERNEATH THE HOOD FO NO APPARENT REASON. REACHED OUT TO BMW AND WAS TOLD DUE TO THE SEVERITY OF THE DAMAGE THEIR INVESTIGATORS COULD NOT DETERMINE THE CAUSE OR ORIGIN OF THE FIR AT THE TIME OF THE INSPECTION. THE NATIONAL ENGINEERING GROUP OBSERVED THERMAL DAMAGE ISOLATED TO THE ENGINE COMPARTMENT WITH GREATER CONSUMPTION TOWARDS THE FRONT. THIS OCCURRED DUE TO NO FAULT OF MY OWN AND BMW IS DENYING RESPONSIBILITY AND HELP.