Probably the most common question that we receive in chat or in email is asking what sort of MMI is in the various Audi models over the years
This link takes you to the very best resource we have ever found, out of Romania, and answers your questions more clearly than we ever could:
LINK: MMI System Identification
2G Lo Basic, 2G High, 3G, 3G+ MIB - it's all covered in detail
Read, and learn