My Apple CarPlay experience is limited to a rental Toyota RAV4, but I recall Waze did work on it, except I didn't use it [Edit] for navigation. I was driving from Sacramento to Reno, and back, so it wasn't necessary for me to use Waze. I used Google Maps and Spotify throughout the road trip.
Edit: I believe the weather app did work (but I could be wrong.) I can't speak for the Porsche unit, unfortunately.