@Adam4868 how is the new unit working out? I only ask because we have a fairly new car with Android auto/apples car play built in, and want to know if they are all the same. At first it was really nice but having used it for a couple months now I don't see any benefit. I compare it of course to a standard bluetooth connection which has been my go to in my last 3 cars (over 12 years)
Firstly the Android auto only works when you plug the phone in (I know wireless units are available but this one isn't). But it won't work with any old USB-C cable, not even a 20w fast charger. I had to buy a 10GB data transfer cable rated at 3.1A. I might in future try one of them wireless adapters but I don't think I can be bothered.
Secondly, being a factory unit it is linked to the centre console controller knob, but it is not easy (or safe) to use. You have to turn the wheel, click left-right or scroll to select different apps, and even then it's not always possible to go "back" without exiting the app completely. When I say Apps, I'm only talking spotify and maps. I don't use any of the others. Yes you do have use of the factory infotainment screen which is bigger than my phone, but that's only useful for maps and, to be honest, I had already got used to the 6.7" phone screen anyway.
In contrast, I can easily use just the bluetooth and my phone for music and for telling google to phone people or read my messages. No need to even look at the screen or touch any buttons at all. No need to plug the phone in (unless it needs charging).
Finally (and this is the cars fault, not necessarily android auto) - there is nowhere convenient to keep your phone plugged in. It hardly fits in the arm rest with the lid closed, and if using the front USB then there is nowhere to rest the phone unless you use an aftermarket phone holder which sits right in front of the infotainment screen. You could stick phone mounts elsewhere but who wants to rely on sticky mounts these days, especially when most interiors have a dappled surface which is hard to stick to.
I just don't see the benefit of things like this, they seem to provide solutions to a problem that never existed.