Cadillac CT4 (2020) is 338 mm (13.31 inch) longer and 10 mm (0.39 inch) wider than Mercedes GLA-Class (2015).
Mercedes GLA-Class (2015) 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).