BMW 8 Series (G15) (2020) is 49 mm (1.93 inch) wider than Cadillac XTS (2016).
Cadillac XTS (2016) is 288 mm (11.34 inch) longer, 160 mm (6.30 inch) higher, 7 kg (15 lbs) lighter and has 90 liters (3.18 ft3) bigger cargo space than BMW 8 Series (G15) (2020).