Dude, Waze isn't supported in Carplay regardless of manufacturer. It doesn't exists. If you connect your Apple device to a car that supports Carplay, the only nav app you can use via Carplay is AppleMaps (at least for now la...). Don't know how much control car manufacturers have over AndroidAuto/Carplay since they're developed by Apple/Google and runs off your phone instead of your car's head unit though. But as far as my limited experience with Carplay/AndroidAuto is concerned, if the app is available, you'll be able to use it.

On another note, the B8 is a real looker. I really hope that VW Malaysia solves all of their aftersales woes in due time. I've been stricken by Passats in general since the B7, the Passat CC and the newer CC but have been really scared shitless from reading owner forums/groups. Would love to own a Passat some day, so fingers crossed.