Bentley Continental GT (2015) is 108 mm (4.25 inch) longer and 130 mm (5.12 inch) wider than Opel Astra Sports Tourer (2015).
Opel Astra Sports Tourer (2015) is 141 mm (5.55 inch) higher, 795 kg (1,753 lbs) lighter and has 182 liters (6.43 ft3) bigger cargo space than Bentley Continental GT (2015).