BMW 8 Series (G14) (2018) is 25 mm (0.98 inch) wider than Volvo S80 (2015).
Volvo S80 (2015) is 8 mm (0.31 inch) longer, 155 mm (6.10 inch) higher, 200 kg (441 lbs) lighter and has 130 liters (4.59 ft3) bigger cargo space than BMW 8 Series (G14) (2018).