Mercedes CL-Class (2018) is 182 mm (7.17 inch) longer and 16 mm (0.63 inch) wider than Opel Insignia Sports Tourer (2014).
Opel Insignia Sports Tourer (2014) is 96 mm (3.78 inch) higher, 620 kg (1,367 lbs) lighter and has 70 liters (2.47 ft3) bigger cargo space than Mercedes CL-Class (2018).