I have recently just purchased a new wing mirror inside(without the housing)when searching for this part I used the part number of the 1 off my car which is broken from the stand so it hangs down the side of my door so iv brought this new part for my 2009 audi a3 1.9tdi sportback and tried to put the housing of my current wing mirror which is the right colour around this new 1 and after a while of pulling my hair out I come to the conclusion it's not the right 1 I asked the seller would it fit my 2009 before I bought it and he said yeah as it's 09 to 12 does any1 no how and were I went rong are the mirrors different on 3dr to 5dr? You can tell it's wrong by seeing where the indicator is my 1 is in the housing and the other 1 is on the trim line as you attach them together