BMW 8 Series (G14) (2018) is 5 mm (0.20 inch) longer and 26 mm (1.02 inch) wider than Volvo XC70 (2017).
Volvo XC70 (2017) is 265 mm (10.43 inch) higher, 247 kg (545 lbs) lighter and has 225 liters (7.95 ft3) bigger cargo space than BMW 8 Series (G14) (2018).