New GL Options
If you are thinking of building a 2013 GL the MBUSA site doesn't have that option. You have to talk to your dealer. I just ordered a 2013 GL350. In talking to my dealer the B&O audio is available for order. I think it might be a "special order" kind of like multi-contour seats are a special order and not in the base options.
I'm going off of memory, since I didn't make the plunge, but I think it was between $5,000 and $6,000 adder on the 2013.







