This picture represents the exhaust system on a BMW that was hit from behind. This is really not a clear case of Secondary Damage, but is a good example of what occurs in a collision none the less. The exhaust tips in the rear were impacted when the vehicle was hit from behind. The top arrow shows the location of the exhaust hanger. This is where the exhaust should be located. The second arrow shows where the mounting bracket for the exhaust is now located. It has been pushed forward from the impact. This damage was not obvious. It should be noted that just the parts for this exhaust system were over $1800.00.

The picture below is that of a Ford Taurus that has been hit in the rear. The buckles are an indication of Secondary Damage. If you were appraising this vehicle, the buckles would indicate that a deflection in the body has occurred. Further investigation would probably reveal damage to the trunk floor, inner quarter panel, wheelhouse, and/or the roof. When a vehicle is hit this hard it is very common to have the roof buckle just above the back edge of the rear door. This is the collapse point in back of the passenger "cage". The "cage" is the strongest part of the car. It was designed to remain intact to protect the occupants.