I currently have an 8P A3 but im looking at upgrading to an A4 avant. I've seen one I like in my price range with the high spec which I want... The only thing it doesn't have is a sat nav/ multimedia system.
Now is this able to be retrofitted? And what would I actually need to complete?
I also would want to get a system with SD slots.
Ive done a search but haven't come back with anything.