Cadillac ATS (2016) is 22 mm (0.87 inch) higher and 318 kg (701 lbs) lighter than Mercedes E-Class (2018).
Mercedes E-Class (2018) is 236 mm (9.29 inch) longer, 265 mm (10.43 inch) wider and has 159 liters (5.62 ft3) bigger cargo space than Cadillac ATS (2016).