BMW 8 Series (G15) (2018) is 5 mm (0.20 inch) wider than Honda Crosstour (2015).
Honda Crosstour (2015) is 151 mm (5.94 inch) longer, 221 mm (8.70 inch) higher, 244 kg (538 lbs) lighter and has 30 liters (1.06 ft3) bigger cargo space than BMW 8 Series (G15) (2018).