I currently have a BMW 1 series with a "y" cable. This has both a USB and aux connection to the car and both have to be connected to play anything from the Iphone/Apple device. With this I can search for all ITunes playlists/albums/artists etc. There is no screen to display artwork.
Like Duroo I have Spotify premium which enables me to make any albums I choose available offline by saving to my device memory. As I have a 64GB Iphone thats a lot of music. My 1 Series recognises the Spotify music and plays tracks as well as displaying tracklist and ability to ff/rew.
Can anybody confirm if any set-up (no nav/standard nav or nav pro with various leads) allows playback of Spotify
Cheers