BMW 5 Series Gran Turismo (2015) is 308 mm (12.13 inch) longer, 86 mm (3.39 inch) wider and 24 mm (0.94 inch) higher than Opel Astra Sports Tourer (2017).
Opel Astra Sports Tourer (2017) is 655 kg (1,444 lbs) lighter and has 40 liters (1.41 ft3) bigger cargo space than BMW 5 Series Gran Turismo (2015).