Don't all cars have this? I've driven lots of different cars from all kinds of manufacturers and they all have Bluetooth lag, sucks if you want to watch YouTube just sitting in the car waiting for something.
I blame this on crappy drivers. A lot of modern Infotainment systems are running Linux of some variety, and the very easiest thing to do to get technology support is to grab the open source proof-of-concept Bluetooth driver, plug it in, and call it good.
As a firmware developer who has also done client-side Bluetooth development on Android, iOS, Windows, and Linux, I can tell you with 100% confidence that this just isn't the case. BlueZ is the best Bluetooth driver on any major platform, and it's not even close. The Windows one crashes constantly, and the iOS one has arbitrary nonstandard limitations and it tries to be clever by initiating pairing when you don't tell it to. BlueZ is the only one that actually implements the by-the-book Bluetooth spec, and does it without randomly exploding.
No, the reason Hondas and Acuras have it is specifically because of (if I understand it correctly) a bug in the car’s Bluetooth handshake that sends audio streams as data. Someone found this by doing a Wireshark capture connecting a laptop’s Bluetooth to the car.
I have little hope for a fix. It seems likely that its easier to just replace the entire controller that drives the audio and screen, and that sounds really really hard.
