BMW 8 Series (G15) (2018) is 43 mm (1.69 inch) longer and 81 mm (3.19 inch) wider than Subaru Outback (2014).
Subaru Outback (2014) is 282 mm (11.10 inch) higher, 320 kg (705 lbs) lighter and has 500 liters (17.66 ft3) bigger cargo space than BMW 8 Series (G15) (2018).