Do all Audi DVDs work in all RNS-E units?

A8 & A6 disks are MMI, not RNS-E.

Only the last production models of A6 upto 2005 came with RNS-E's installed, so I would say that nearly all disks for A6 and A8 are MMI and not compatible

Plenty of RNS-E disks on ebay

Craig

RNS-E is also MMI :wink:
All systems use Multi Media Interface. But that's true A8/A6 DVDs are different than other ones. Also eBay is full of EU DVD maps. It's way harder to get US DVD maps but you can order directly from NAVTEQ for $199.

RNS-E does have MMI technology....

But the A6/8 disks are clearly marked MMI and the RNS-E disks are labelled RNS