Buick Excelle GT (2015) is 250 kg (551 lbs) lighter than Opel Astra Sports Tourer (2015).
Opel Astra Sports Tourer (2015) is 111 mm (4.37 inch) longer, 16 mm (0.63 inch) wider, 72 mm (2.83 inch) higher and has 135 liters (4.77 ft3) bigger cargo space than Buick Excelle GT (2015).
