Buick Regal TourX (2018) is 73 mm (2.87 inch) longer, 6 mm (0.24 inch) wider and has 40 liters (1.41 ft3) bigger cargo space than Opel Insignia Sports Tourer (2014).
Opel Insignia Sports Tourer (2014) is 30 mm (1.18 inch) higher and 82 kg (181 lbs) lighter than Buick Regal TourX (2018).
