Buick Excelle GT (2015) is 41 mm (1.61 inch) longer, 174 mm (6.85 inch) higher, 420 kg (926 lbs) lighter and has 55 liters (1.94 ft3) bigger cargo space than Mercedes AMG GT (2016).
Mercedes AMG GT (2016) is 141 mm (5.55 inch) wider than Buick Excelle GT (2015).