Cadillac CT4 (2020) is 331 mm (13.03 inch) longer and 10 mm (0.39 inch) wider than Mercedes GLA-Class (2016).
Mercedes GLA-Class (2016) is 72 mm (2.83 inch) higher, 175 kg (386 lbs) lighter and has 118 liters (4.17 ft3) bigger cargo space than Cadillac CT4 (2020).