My experience is that Android Auto is a complete pile of garbage, to the extent that I needed to uninstall it from my phone.
The main thing that I wanted, was to be able to use Google Maps and show the map on my car console. Sometimes this worked ok, and this was really nice. But other times, there was some kind of glitch that caused Google Maps to crash and reset over and over and over to the point that it was worse than completely useless. I never understood why it worked ok sometimes and not other times. So I quit using Android Auto, and then I had to uninstall it to get Google Maps back to giving me voice directions.
Besides that, I did not like how it handled incoming calls and texts, I thought it was hazardous. When I get a phone call in the car, I normally want to ignore it completely, other than to notice that I may want to check who called. I can do that fine with the phone in my pocket. AA made the incoming call a lot more intrusive and hard to ignore. AA also made it impossible to read incoming texts. I definitely do not want to send any texts while driving, but I can sometimes spare a couple of seconds to read one. AA made it impossible to read the texts. I think I tried for a while using the car console touchscreen to find the text messages, but AA is so slow and balky that this was slow and distracting. I definitely thought it was much safer to drive without Android Auto than with it.