Cadillac ATS (2016) is 640 kg (1,411 lbs) lighter than Mercedes S-Class (2018).
Mercedes S-Class (2018) is 602 mm (23.70 inch) longer, 93 mm (3.66 inch) wider, 70 mm (2.76 inch) higher and has 119 liters (4.20 ft3) bigger cargo space than Cadillac ATS (2016).