Title. Pisses me off mildly. I’ve got my earbud in for a reason (quick drive) and Bluetooth decides to connect to the car when it starts. The cars’ head unit takes forever to start and have to manually switch over to Bluetooth mode (while the audio is already playing) and the volume is way down.
And when you get out of the car it doesn’t automatically connect back to the earbuds.
Bluetooth for audio might be the worst implementation of a specification every devised. Ridiculous lag, no multipoint connection, no ability to manage or negotiate connections from the device, limited ability to define the connection (audio vs headset among the culprits). BT for audio just seems like a cruel joke.