BMW 5 Series Gran Turismo (2018) is 30 mm (1.18 inch) longer and 11 mm (0.43 inch) wider than Opel Insignia Country Tourer (2017).
Opel Insignia Country Tourer (2017) is 45 mm (1.77 inch) higher, 99 kg (218 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than BMW 5 Series Gran Turismo (2018).