BMW 8 Series (G14) (2018) is 393 mm (15.47 inch) longer and 122 mm (4.80 inch) wider than Subaru XV (2014).
Subaru XV (2014) is 276 mm (10.87 inch) higher, 483 kg (1,065 lbs) lighter and has 30 liters (1.06 ft3) bigger cargo space than BMW 8 Series (G14) (2018).