My 2013 Audi has a rather poor non-touchscreen interface. It has Bluetooth pairing for phone calls but not for plain audio (music), which is really odd. It does have one of those very old large iPod connectors, and I've attached a Bluetooth adapter to that, which works well enough, except that it doesn't turn off when I turn off the car, and my phone can reconnect randomly for about half an hour.

I have done some shopping and found an Android Auto-capable headunit that would replace the whole built-in thing, but it's something I haven't jumped on yet. I wonder how many other cars can have their headunit replaced with something CarPlay or Android Auto capable?