I have owned 3 E class. this is really a fine vehicle. quality definitely less than a German car used to be. 1 sensor after another need to be replaced. Ride quality still better than average wagon. 4matic works great in snow. Steering wheel feels the best in all cars I had owned (more than 40). Dealership service is very good, free pick up and delivery to my house. Of course, invoices is nothing under $1000. Re-sell value is BAD. I paid $30K 3 years ago, now worth $12-13K only. HVAC is far worse than Japanese cars. Even my "S" class AC still not good as my 1991 Lexus. Well, still receive a lot of complements in parking lot.
4Matic works great in winter in NY upstate mountain roads. 3rd seat is favor features for all kids visit my car. Steering feel is definite MB.
HVAC particularly in summer. suspension can use a bit softer/luxury turning.