THE ACCIDENT IN WHICH THE SEAT BELT FAILED DID NOT RESULT IN ANY DAMAGE TO THE REAR BUMPER. HOWEVER, EVEN AT THIS LOW SPEED THE BELT LATCH FAILED TO HOLD MY WIFE IN PLACE, RESULTING IN HER WHIPLASH. AT MANY TIMES THE LATCH SEEMS TO BE PROPERLY LATCHED, BUT WITH ONLY SLIGHT PRESSURE SUCH AS ADJUSTING YOUR SEATING POSITION THE BELT WILL UNEXPECTEDLY COME UNDONE. *AK