Buick Regal (2015) is 905 kg (1,995 lbs) lighter than Mercedes GL-Class (2014).
Mercedes GL-Class (2014) is 315 mm (12.40 inch) longer, 141 mm (5.55 inch) wider, 367 mm (14.45 inch) higher and has 278 liters (9.82 ft3) bigger cargo space than Buick Regal (2015).