Cadillac ATS (2018) is 6 mm (0.24 inch) higher and 345 kg (761 lbs) lighter than Mercedes S-Class Coupe (2016).
Mercedes S-Class Coupe (2016) is 383 mm (15.08 inch) longer, 91 mm (3.58 inch) wider and has 19 liters (0.67 ft3) bigger cargo space than Cadillac ATS (2018).