I believe Tesla does overlay its routing onto google maps, but the actual navigation is coming from OSM ultimately. I’ve noticed Tesla making some really distinct navigation choices vs what appears on my phone in the past, and not in a good way. But it’s been improving over time, and one perk that’s been noted is that because OSM can be populated with data by your average person, Tesla owners have gone in to add intersections/roads etc in the past and improved their own navigation results locally

Everything you say is correct, but the one thing I actually miss on our Tesla is Apple Maps. I have liked it better than Google Maps (or its Tesla version) for a long time -- like its turn/direction instructions (telling you the turn is at the next traffic light or stop light or ... is a lot better than the distance you get from Google Maps).

And, ironically, I was eager to try CarPlay on a recent trip where there was no Tesla rental available, we rented a VW Tiguan, only to discover that for CarPlay to work you needed a USB-A to Airplay cable and I only had USB-C to Airplay cables... I even got a third party USB-A cable at a gas station, only to discover it too didn't work (likely it was cheap POS where they only ran the wires needed for charging). So thanks to VW not supporting USB-C (which our 2020 Tesla Model Y certainly does) I never did experience CarPlay...

I agree that Apple Maps are better, but as a whole i find the infotainment in a Tesla to be very functional, and while directions do take some getting used to, it does work.

> So thanks to VW not supporting USB-C

I previously owned a VW ID.4, which has wireless CarPlay. Sadly, something in either CarPlay or VWs implementation causes the phone to run VERY hot while using it wireless, which in turn causes a lot of battery drain, which again means you will want to charge your phone. Conveniently the ID series have wireless charging (extra option) in a small enclosed compartment, which adds enough heat to make your phone shut down.

Aha you might say, but i will use wired charging. The ID.4 has ample USB-C plugs, 2 for the front seats and 2 for the rear seats, and yes, they do charge your phone, but they don't allow wired carplay, so the heat issue persists.

So yes, the car does support CarPlay, but most of the time it was not worth the trouble.

Besides, any CarPlay implementation today should surely include Apple Maps EV Routing, which will more or less replace the built in route planner and let Apple do the route planning based on real time data from the car, which in theory could be almost as good as Tesla route planning, with the huge caveat that Tesla knows the drag coefficiency of each car, making it able to plan much more precisely.