When I am driving I hear a metallic scraping noise from the back of the car, at first it was as if a steel girder (!!) was under my car, I pull over and check and nothing is there and the exhaust is fine not loose.
Today I drive off and it happened again but I carried on, it got so loud I thought either the car would fall apart or the exhaust would drop off. Then I slow down, nothing, after going over a slight bump its back and went away after that.
There is no loss of power or drivability, braking, etc. I am assuming someone has threw a few stones in the exhaust and they are deep in, but the noise doesn't act continious.
My car has done this twice now over the last month and a half.
A3 V6 DSG