EQS Sedan models equipped with the optional Pinnacle Trim with Executive Interior Package have a front passenger seat that can also fold forward to provide additional space for second row occupants, along with a backrest for the rear seat that can be adjusted up to 38 degrees. Rapid heating rear seats, neck and shoulder heating for rear passengers, as well as pneumatic adjustment of the rear seat depth are also included. Another exclusive element is the illuminated trim accents integrated into the back of the front seats.

Enhanced comfort also extends to the standard rear seats in the EQS Sedan. The angle of the backrest for the rear seats can be adjusted from 27 to 36 degrees at the touch of a button, and an additional 0.2 inches of foam has been added to the rear seat backrest. The layered design also visually emphasizes the individual comfort for passengers.