Hello, I am a few days proud owner of a new C4 Coupe (closer in the footer). Since some questions about the experience with the RT4 appeared here in the forum, I would like to report. 1. Design of the menu is similar to the RT3 with a little more functions. Designally good to look at. 2. The 3D card animation (also called Birdview) I personally feel pleasant. 3. A small disadvantage, you have no possibility to display a 2/3 display of the map. 4th big PLUS – Finally CITROEN managed to integrate the whole of Europe on a hard disk and deliver it as standard. 5. The RT4 is not yet fully matured, or it is still due to the missing software CD (Habe initially had problems to change the background drive and resulting crashes and today the CD Player has had to change hung up – strange, but wait a bit) My personal rating in the school grade process 2,5 HP: I don’t regret anything