BMW 8 Series (G15) (2018) is 393 mm (15.47 inch) longer, 122 mm (4.80 inch) wider and has 40 liters (1.41 ft3) bigger cargo space than Subaru XV (2020).
Subaru XV (2020) is 274 mm (10.79 inch) higher and 484 kg (1,067 lbs) lighter than BMW 8 Series (G15) (2018).