Foggy has had one. I've had a couple of Mercs. No out of the ordinary problems with either of them. And, the after market, at least up here, is head and shoulders above the so called "big three", Fiat, GM and Ford. I suggest a lemon shouldn't taint an entire line. I can't complain about my F-150's either, just the after market care. Such is why I have a trusted "shade tree" mechanic.
The most positive thing I can say about Benz is, a complaint to the USA office gets the local vendor in line fairly quickly. The dealership up here recently changed hands and the after market was dismal. A couple of phone calls and suddenly customer satisfaction, not number of vehicles sold, is of paramount concern. I like that.