BMW 5 Series Gran Turismo (2018) is 285 mm (11.22 inch) longer, 53 mm (2.09 inch) wider and has 70 liters (2.47 ft3) bigger cargo space than Opel Astra (2015).
Opel Astra (2015) is 32 mm (1.26 inch) higher and 294 kg (648 lbs) lighter than BMW 5 Series Gran Turismo (2018).