USB Interface
 

What is the maximum size usb stick that can be used with the USB interface? I have read some reports saying that it is 4GB due to the file system?

Also does the interface display track info on the stereo?

https://www.audiforums.com/forum/audi-a3-12/mp3-card-help-78786/
This thread started before yours should have all the answers your looking for.

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isn't that thread for SD size, not USB. btw, where is the USB interface?

Yea I thought that, the thread is for SD cards... the USB interface is in the glove box, its an option instead of the ipod connection on UK models...

Hmmmmm..Very interesting..I will try to check it out the links..