As I have repeatedly said, I am someone who has to use nav in my Golf pretty much every day for work.
The VW system does not have a quality pathing algorithm. Sure it knows where things are and it will get you there eventually, but its not very smart.
Google maps is better.
Waze is MUCH better.
And thats before you start talking about map data accuracy, ease of updates, extra warnings about potholes, roadworks, accidents etc etc
If you just don't know where you are going, VW will get you there. If you want to get there in the quickest possible way, use Waze.
That's not just me, there are numerous tests out there that show you Waze is superior to anything else when it comes to the job of getting you there.