Hi there! I have recently ordered a New A3 1.4 sport. However i have no decided that i want the SD card sat nav. I have spoken with the company that i'm leasing from and they said that it wasn't possible to amend the order (they did try). I contacted one of my local Audi dealers and they said it was possible to retro-fit it but it would cost £680 to supply and fit. No as far as I'm aware all they need to do is enter a code to enable it and supply the SD card for the maps. I could be wrong, but that seems like a lot of money! Has anybody had this done for cheaper?