Buick Regal (2014) is 539 mm (21.22 inch) longer, 77 mm (3.03 inch) wider, 50 mm (1.97 inch) higher and has 61 liters (2.15 ft3) bigger cargo space than Mercedes A-Class (2016).
Mercedes A-Class (2016) is 270 kg (595 lbs) lighter than Buick Regal (2014).