Perhaps Mercedes or BMW's get a lot of complaints because the experience compared to the cost is sub-par. What I'm saying is, I've driven both, and I couldn't justify the initial price of any newer model, let alone any money after the purchase. Luxury cars don't excite or inspire any emotion or real character, people get them because they're nice or smooth (boring). Specifically because they don't do anything flashy or exuberant, except look good. So, when anything goes wrong with a car was only bought to be luxurious, all they do is *****. Meanwhile, the guy that bought the Ferrari spent 5X as much with 5X more for maintenance and junk breaking, but he ain't *****ing. Best to get a car that you feel, or it just becomes a chore.