Cadillac XTS (2017) is 721 mm (28.39 inch) longer, 19 mm (0.75 inch) wider and has 75 liters (2.65 ft3) bigger cargo space than Mercedes GLA-Class (2017).
Mercedes GLA-Class (2017) is 110 mm (4.33 inch) higher and 254 kg (560 lbs) lighter than Cadillac XTS (2017).