I don’t have much experience in high-end luxury cars but I have owned a spectrum of brands from European,domestic and Japanese manufacturers.
Honestly I have never been impressed by a factory system. The H/K in our older Mercedes was a joke. We all know Bose is a gimmick. I’ve heard the Fender systems are pretty good but I’ve never had the chance to demo them.
The best I think I’ve heard is the Logic 7 in BMW.
What are some of your favorites?
The Mark Levinson system in my Lexus has a clarity to it I’ve never experienced in a car stereo. It changed what I thought about Mark Levinson audiophile amps and all that. I’d like to hear a Mark Levinson home system someday.