Buick Regal Sportback (2019) is 231 mm (9.09 inch) longer and 768 kg (1,693 lbs) lighter than Mercedes G-Class (2018).
Mercedes G-Class (2018) is 69 mm (2.72 inch) wider, 514 mm (20.24 inch) higher and has 197 liters (6.96 ft3) bigger cargo space than Buick Regal Sportback (2019).