BMW X3 (2015) is 25 mm (0.98 inch) wider and 148 mm (5.83 inch) higher than Opel Insignia Sports Tourer (2017).
Opel Insignia Sports Tourer (2017) is 256 mm (10.08 inch) longer, 195 kg (430 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than BMW X3 (2015).