Buick Excelle GT (2015) is 375 kg (827 lbs) lighter than Opel Insignia Sports Tourer (2015).
Opel Insignia Sports Tourer (2015) is 326 mm (12.83 inch) longer, 58 mm (2.28 inch) wider, 50 mm (1.97 inch) higher and has 155 liters (5.47 ft3) bigger cargo space than Buick Excelle GT (2015).