The fascias on these cars have a few fasteners that are actually designed to tear off in an accident. Reason being that using a hard attachment and being in a minor collision you transfer the impact to the sheet metal causing damage to it and making the repair more expensive. If your car has been rear ended even lightly, like say in a parking lot there may not be any visual damage but the brackets that hold these covers on are plastic so a few of the snaps could be broken. The sides of your cover have one screw in the wheel well (tip of the cover)and then snap into a bracket. The whole rear area has like 4 or 5 snaps that also snap into a plastic bracket. It should not be loose but I think they all have some movement in the up down position.