I'm contemplating a new BlueTec and am trying to gather technical information. Not the easiest stuff to find. Anyone have a link to more detailed specifications than found on mbusa site?

I've found specs indicating cargo capacity of 36/71 ft3 behind 2/1st row seats. But, I haven't found measurements. What is the largest box you can fit into the rear end? Rear opening width and height? I've seen length dimension of 6.8 feet in another thread.

Thanks