Mercedes-Benz is continuing the testing procedures for the extra-long S-Class as a prototype was seen tackling the Nürburgring.
The S-Class lineup will gain a third member next year when the "XL" (name not confirmed) version will come out. It will be slotted above the existing long wheelbase version which has an overall length of 5246mm. The longer one will be around 5500mm in length and will keep the same 2+2 seating layout. While the third side windows of the short- and long-wheelbase versions are included in the rear doors, on the XL model these will be positioned after the rear doors as a result of the added wheelbase.
Mercedes-Benz plans to add an even longer version sometime next year, the Maybach-replacing Pullman variant which will allegedly be almost six meters long and will have a 2+2+2 seating arrangement. Later on, the S-Class family will welcome a CL-replacing coupe version which has already been previewed by a stunning concept, along with a convertible model as seen in previous spy shots.