I've never owned an MB coupe, but I've often wondered this very same thing while looking at coupes on the lot. There never appears to be much leg room or head room in the back seat. Of course, I'm sure there are always some people who need to cram and extra person in just for a short trip. One time I saw an R129 300SL with three teenagers in it. One of the guys was kneeling in the small area behind the two seats. Man, if they would have gotten into an accident the guy behind the seats would have gone flying!

Has anyone been in the back seat of a CLS? I've never sat in one, but while looking at them at the MB dealer there doesn't appear to be much head room in the back seat.

At just over 6'4" I can honestly say that my W140 is the only back seat that I have sat in that allows me to sit up straight, and I still have enough leg room even when the front seats are all the way back.