Cadillac XTS (2019) is 693 mm (27.28 inch) longer, 18 mm (0.71 inch) wider and has 74 liters (2.61 ft3) bigger cargo space than Mercedes GLA-Class (2017).
Mercedes GLA-Class (2017) is 110 mm (4.33 inch) higher and 261 kg (575 lbs) lighter than Cadillac XTS (2019).