self leveling

Hello guys, I am looking to buy a Wagon, and after having discovered that the self levelling is standard on the E class (S211), I decided to turn away from it as I am looking for reliability. Thus, do you know if E-class' little brother, W204 has the same system by default, or is it normal...

Hi I just test drove a 2006 LWB R Class 320 SE. Mercedes Direct tell me it does not have self leveling suspension at the rear, but all the reviews I look at online imply that it is standard spec. They even had their technical people to look at they say it does not have any. Does anyone...