I drive an Audi RS7 I bought used - it happened to come with the 19 speaker B&O, which is an $8000 msrp add-on. The speakers were crap, so I replaced 11 of them. I absolutely do not expect it to sound as good as my home hifi system but it does sound OK now. I drive a lot so at least want it to be decent sounding.
But again, wow, they make it an $8000 upgrade option, and the speakers they pair with that option are woefully lacking in quality.
Concerning high end audio names in new cars
It made sense to me when high end audio manufactures started selling their brand names to the likes of BMW. I really had to look twice when I saw the Jeep Grand Wagoneer on a commercial with large blue MacIntosh meters on the dash! I went to the website just to make sure my eyes weren't deceiving me. It's just fluff of course. I've been in several vehicles with supposedly high end audio systems. I wasn't impressed with any of them. I wonder what impact if any the Mac meters will have on the general public. I hope audiophiles steer clear of this model car as it could prove to be a distraction for sure.