I didn’t expect the auto in the W113 of my last post to be accepted. Which made me think of this question.
Try to ignore “the owner’s intent” in a car, since that could open pretty much any vehicle to either transmission. It’s the personality. For example, someone could buy a 1968 Shelby GT500KR with the intention of just driving 30 mph around the country club all day long - an auto would be fine. But I think the car’s rough-n-tough personality better accepts a manuél, one that you can rough-n-tough.
There can be room for debate but don’t turn this into YouTube. If two different people have different transmission options for the same car, so be it.
Big luxury cars pretty much necessitate the auto.