MMI without Nav- upgrade?


Registered User
i have a 05 A6 with MMI but it doesn't have Nav installed. does anyone know if it is possible for Audi (or someone cheaper!) to retro install it onto my system?

My 320d E90 i drive had nav but no BT. i raised a similar question with BMW and the answer was about £2k. naturally i declined.

Suggestions/opinions/advice please!