Buick Regal (2016) is 67 mm (2.64 inch) longer and 920 kg (2,028 lbs) lighter than Mercedes G-Class (2015).
Mercedes G-Class (2015) is 10 mm (0.39 inch) wider, 471 mm (18.54 inch) higher and has 85 liters (3.00 ft3) bigger cargo space than Buick Regal (2016).