BMW 8 Series (G15) (2018) is 28 mm (1.10 inch) longer and 62 mm (2.44 inch) wider than Subaru Outback (2018).
Subaru Outback (2018) is 334 mm (13.15 inch) higher, 504 kg (1,111 lbs) lighter and has 500 liters (17.66 ft3) bigger cargo space than BMW 8 Series (G15) (2018).