BMW 8 Series (G15) (2018) is 46 mm (1.81 inch) wider than Opel Insignia Country Tourer (2015).
Opel Insignia Country Tourer (2015) is 70 mm (2.76 inch) longer, 172 mm (6.77 inch) higher, 324 kg (714 lbs) lighter and has 120 liters (4.24 ft3) bigger cargo space than BMW 8 Series (G15) (2018).