I just went into the back of a BMW! thankfully it was only at about 5mph, my car is completely fine, however the womans BMW has about a 3 inch scratch ,and a hole from where part of the metal on the bumper has pulled away, the hole is come out about half an inch from a side on view. From a front on view, you cant even see the hole, just the scratch.

How much do you think this is going to cost me, I dont know if that can be repaired, or if I am going to have to pay for a whole new bumper to be fitted!