A:AnswerI have one of the Pioneer ones and you can enter what you're looking for or an exact address much like a Garmin. It's actually really handy. If possible you should play around with one before buying. I like mine a lot, but switching from Radio to Nav to SiriusXM to DVD and all of that is not very smooth.
A:AnswerIt should I'm sticking it in an 07. Maps as far as I know is for Canada, Mexico, US, but you can use the maps from your phone with Apple CarPlay.
A:AnswerYes, install ease will depend on if you have Bose or not. I just installed mine in an 08 Audi A3 with Bose and it wasn't that bad. I would buy install items from enfig car stereo as they specialize in Audi/be stero installs.