I happened to have Mark Levinson in my previous 2 GS450h (2008 & 2013) and found them super good. ML produced clean and clear sounds especially the mid-bass. 99% of my friends when sitting in my car, they all said the sound system in my car sounded fantastic and they asked why:-). I just pointed my fingers to the "Mark Levinson" logo on the Head Unit to them:-). Even now, some of them occasionally asked me to give them a drive around just for listening to the music in my car:-). They told me their next car will be Lexus with ML in it. I never liked ML (not for its sounds but for its nasty lawsuit history of pushing Mr. Mark Levinson out of the group) but I have to admit that ML produces great sounds. I listened to Burmester in Mercedes E450 and GLS450 but still prefer ML in my GS450h.
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.