AFTER A MINOR ACCIDENT, I TOOK MY CAR TO THE AUTHORIZED SERVICE CENTRE OF THE LOCAL DEALER FOR THE REAR BUMPER REPLACEMENT. I WAS IN THE WORKSHOP WHILE THE TECHNICIANS WERE REMOVING THE DAMAGED BUMPER OF MY CAR. WHEN THEY HAVE REMOVED THE BUMPER COMPLETELY, I HAVE NOTICED THAT THERE WAS A RECTANGULAR FLEXIBLE PATCH ATTACHED ON THE SIDE SURFACE OF MY VEHICLE'S BODY BY SOME KIND OF ADHESIVE. THE SIZE OF THE PATCH WAS APPROXIMATELY 150 MM X 300 MM X 2 MM (INCLUDING THE ADHESIVE LAYER) AND IT'S LOCATION WAS ON THE REAR RIGHT HAND SIDE OF THE VEHICLE BODY. THIS PATCH WAS OUT OF SIGHT WHEN THE BUMPER WAS INSTALLED. THE PATCH WAS BEING USED TO CLOSE A RECTANGULAR HOLE WHICH WAS EXTENDING IN TO THE PASSENGER CABIN. THIS HOLE WAS APPROXIMATELY 20 CM ABOVE THE EXIT OF THE EXHAUST TAILPIPE. BECAUSE OF IT'S LOCATION, IT IS VERY LIKELY FOR THE HOLE TO BE EXPOSED TO EXHAUST EMISSIONS DIRECTLY. THE PATCH CLOSING THE HOLE DIDN'T SEEM TO BE SO STRONG. THIS SELF ADHESIVE PATCH MUST BE UNDER THE ACTION OF VIBRATIONS AND THE DIVERSITY OF ENVIRONMENTAL CONDITIONS ALL THE TIME. SO, THIS SITUATION IS LIKELY TO CAUSE SERIOUS. AND FATAL RISKS FOR THE PASSENGERS AS A RESULT OF THE EXHAUST GASES ENTRY IN TO THE CABIN INCASE THE PATCH IS TORN OR DAMAGED SOMEHOW. I HAVE INFORMED THE SERVICE AUTHORITIES ABOUT THE SITUATION AND THEY TOLD ME THAT THERE WERE TWO SYMMETRICALLY LOCATED HOLES WHICH WERE MACHINED FOR THE CABIN AIR EXTRACTORS BUT THEIR DESIGNERS PREFERRED TO USE ONLY ONE EXTRACTOR FOR EACH VEHIC