BMW 5 Series (2020) is 245 mm (9.65 inch) longer and 53 mm (2.09 inch) wider than Opel Astra Sports Tourer (2015).
Opel Astra Sports Tourer (2015) is 57 mm (2.24 inch) higher, 209 kg (461 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than BMW 5 Series (2020).