Mercedes S-Class Coupe (2017) is 129 mm (5.08 inch) longer and 34 mm (1.34 inch) wider than Opel Insignia Grand Sport (2017).
Opel Insignia Grand Sport (2017) is 41 mm (1.61 inch) higher, 585 kg (1,290 lbs) lighter and has 90 liters (3.18 ft3) bigger cargo space than Mercedes S-Class Coupe (2017).
