Buick LaCrosse (2017) is 607 mm (23.90 inch) longer and 33 mm (1.30 inch) wider than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 150 mm (5.91 inch) higher, 183 kg (403 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than Buick LaCrosse (2017).