Citroen C5 (2017) is 44 mm (1.73 inch) higher, 330 kg (728 lbs) lighter and has 39 liters (1.38 ft3) bigger cargo space than Mercedes S-Class Coupe (2016).
Mercedes S-Class Coupe (2016) is 247 mm (9.72 inch) longer and 37 mm (1.46 inch) wider than Citroen C5 (2017).