BMW 5 Series Touring (2018) is 164 mm (6.46 inch) longer, 67 mm (2.64 inch) higher and has 30 liters (1.06 ft3) bigger cargo space than Opel Insignia (2015).
Opel Insignia (2015) is 189 mm (7.44 inch) wider and 243 kg (536 lbs) lighter than BMW 5 Series Touring (2018).