Cadillac ATS (2018) is 3 mm (0.12 inch) higher and 170 kg (375 lbs) lighter than Mercedes CLS-Class (2015).
Mercedes CLS-Class (2015) is 297 mm (11.69 inch) longer, 76 mm (2.99 inch) wider and has 139 liters (4.91 ft3) bigger cargo space than Cadillac ATS (2018).