BMW 6 Series Gran Turismo (2019) is 177 mm (6.97 inch) longer, 46 mm (1.81 inch) wider, 26 mm (1.02 inch) higher and has 49 liters (1.73 ft3) bigger cargo space than Opel Insignia Sports Tourer (2014).
Opel Insignia Sports Tourer (2014) is 195 kg (430 lbs) lighter than BMW 6 Series Gran Turismo (2019).