BMW 3 Series Gran Turismo (2021) is 11 mm (0.43 inch) higher and 78 kg (172 lbs) lighter than Opel Insignia (2015).
Opel Insignia (2015) is 16 mm (0.63 inch) longer, 255 mm (10.04 inch) wider and has 19 liters (0.67 ft3) bigger cargo space than BMW 3 Series Gran Turismo (2021).