Buick Excelle GT (2015) is 49 mm (1.93 inch) higher, 725 kg (1,598 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than Mercedes S-Class Coupe (2020).
Mercedes S-Class Coupe (2020) is 439 mm (17.28 inch) longer and 99 mm (3.90 inch) wider than Buick Excelle GT (2015).