BMW 5 Series Gran Turismo (2018) is 101 mm (3.98 inch) longer than Opel Insignia (2014).
Opel Insignia (2014) is 217 mm (8.54 inch) wider, 30 mm (1.18 inch) higher, 41 kg (90 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than BMW 5 Series Gran Turismo (2018).