Buick Regal (2017) is 470 kg (1,036 lbs) lighter than Mercedes S-Class (2014).
Mercedes S-Class (2014) is 414 mm (16.30 inch) longer, 42 mm (1.65 inch) wider, 17 mm (0.67 inch) higher and has 98 liters (3.46 ft3) bigger cargo space than Buick Regal (2017).