BMW 8 Series (G15) (2018) is 213 mm (8.39 inch) longer and 117 mm (4.61 inch) wider than Nissan X-Trail (2014).
Nissan X-Trail (2014) is 429 mm (16.89 inch) higher, 424 kg (935 lbs) lighter and has 145 liters (5.12 ft3) bigger cargo space than BMW 8 Series (G15) (2018).