RNS510 would be more compatible, yes. But man goodluck trying to find someone reselling their old version that is made to fit the Touareg. Every 510 I'm finding online is not for the Touareg. And to think I just sold mine a few weeks ago on eBay like an idiot!!! I should have held onto it for a few extra weeks to make certain I wanted to stick with my Android unit. I love this unit, it does everything I want it to do and even better, I tether it to my phone for data via WiFi and have all of my Youtube videos and songs playing while driving (no I don't watch shows while driving). Biggest drawback is that it doesn't work well with crystal clear loud sound because it's not compatible with my Dynaudio Sound System.I'm surprised that these units are still so expensive. I would love to get one for my 2009 Touareg, but the cost is still prohibitive. My car only had the base Delta radio. I'm not even sure if I can use the 510 anyway as my car doesn't seem to have a separate amplifier (I checked). I did replace the Delta radio with a RNS2 (DVD), works perfectly but I lost steering wheel controls (probably wrong CANBUS version, I wonder if a 510 is more compatible in that regard).