I don't recall seeing it on the standard seats, and I doubt they would be on the Recaros (adding extra weight kind of defeats the purpose of a Recaro). I kind of doubt the AMGs (short of the S-class) would have it either since none of them are really grand tourers and they aren't really designed for long-distance drives. It also looks like it would be an impediment to driving on the twistys which again defeats the purpose of an AMG. You could always ask the dealer if there is an add-on if its not there though.