BMW 8 Series (G15) (2018) is 415 kg (915 lbs) lighter than BMW X6 (2019).
BMW X6 (2019) is 92 mm (3.62 inch) longer, 102 mm (4.02 inch) wider, 355 mm (13.98 inch) higher and has 160 liters (5.65 ft3) bigger cargo space than BMW 8 Series (G15) (2018).