BMW 5 Series Gran Turismo (2016) is 107 mm (4.21 inch) longer, 38 mm (1.50 inch) wider, 104 mm (4.09 inch) higher and has 10 liters (0.35 ft3) bigger cargo space than Opel Insignia Grand Sport (2017).
Opel Insignia Grand Sport (2017) is 550 kg (1,213 lbs) lighter than BMW 5 Series Gran Turismo (2016).