Same problem here on 11T. I had AA working great with an old Samsung A50 and very disappointed its not working on my new 11T phone :(
Mi 11T
MIUI 13.0.2 Global Stable
Peugeot 208 (2017)
Android Auto 7.5 (latest release)
Also tried 7.4
Tried 5 different cables (new and old usb-c) and...