To begin, the problem I describe has happened more than once. When I bought my 2009 Toyota Camry (with 500 miles on it), some idiot had dented the back fender, which was "discovered" and pointed out to me when I was doing the financing. I thought, "Well, the dealership will replace the bumper. No problem." Big mistake. I should have walked away from that ill-fated dealership right then. As it turns out, over the course of almost two years, whenever I go over a bump or an incline, the top of my car's roof makes a strange "popping" noise as if the aluminum/metal/steel has been damaged in some way and is buckling or tending to right itself. I tend to think the constant buckling sound must be related to when the idiot test driver backed into a pole. The problem used to happen only now and then, but now I hear the popping noise several times a day, chiefly when pulling into or out of my steep driveway. For all the money I put down on this car in addition to the expensive financing, it makes me stop to ask why I ever would consider buying a new car again. I wonder if anyone else has had this happen with their Camry, or if this annoying popping noise is a result of when the fender was dented.