BMW 8 Series (G15) (2018) is 4 mm (0.16 inch) longer and 26 mm (1.02 inch) wider than Volvo XC70 (2020).
Volvo XC70 (2020) is 263 mm (10.35 inch) higher, 248 kg (547 lbs) lighter and has 155 liters (5.47 ft3) bigger cargo space than BMW 8 Series (G15) (2018).