 This is my sixth Benz. All the rest where ok as far as dependability. This 2006 E350 4 matic has been nothing but trouble.I bought it  24 month and it has been in for service 16 times. 5 times for trany problems(leaks,shifting trouble,transfer case problems) 5 times for electrical troubles.(battery kept draining still cant find the problem three new batteries so far) Air bag trouble(2x) , steering rack leaks(2x) and the seat back panels had to be changer (they came loose) and the front power seats jammed 2X .MB is in the process of replacing the car (I am only paying for mileage used) They treat good customers well. First time buyer would have a problem (Lawyer Time )