Mercedes GLC-Class (2020) is 161 mm (6.34 inch) higher than Opel Insignia (2015).
Opel Insignia (2015) is 186 mm (7.32 inch) longer, 194 mm (7.64 inch) wider, 442 kg (974 lbs) lighter and has 190 liters (6.71 ft3) bigger cargo space than Mercedes GLC-Class (2020).