Buick LaCrosse (2014) is 591 mm (23.27 inch) longer and 23 mm (0.91 inch) wider than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 107 mm (4.21 inch) higher, 145 kg (320 lbs) lighter and has 129 liters (4.56 ft3) bigger cargo space than Buick LaCrosse (2014).