AFTER DROPPING OFF MY BMW X5M FOR SERVICE AT A BMW DEALERSHIP ON 01/27/2021, (THEY HAD THE VEHICLE FOR TWO DAYS), BMW CALLED US, TO INFORM US THAT THE VEHICLE WAS READY TO BE PICKED UP. MY WIFE DROVE THE CAR DIRECTLY HOME, WITHOUT STOPPING, (20 MILES), PARKED THE VEHICLE IN OUR GARAGE, TURNED THE CAR OFF, AND TEN MINUTES LATER, THE ENGINE CAUGHT ON FIRE AND BURNED THROUGHOUT AND ALSO BURNING HALF OUR GARAGE. THE VEHICLE WAS STATIONARY AND NOT IN MOTION AND COMPLETELY TURNED OFF.