Not sure if the 2013 software is different than the 2012, but our 2012 x3 GPS was not accurate at all. It was a 2011 build, maybe that had something to do with it. The 2013 seems much more accurate and the the heads up display I find it very useful. I use the BMW app and send directions to the car. Get in the car check messages, start guidance and off we go..
Impressed so far!!!