GMC Acadia (2020) is 48 mm (1.89 inch) wider, 21 mm (0.83 inch) higher, 245 kg (540 lbs) lighter and has 825 liters (29.13 ft3) bigger cargo space than Mercedes GLS-Class (2019).
Mercedes GLS-Class (2019) is 235 mm (9.25 inch) longer than GMC Acadia (2020).