BMW 8 Series (G15) (2019) is 50 mm (1.97 inch) wider than Cadillac XTS (2015).
Cadillac XTS (2015) is 289 mm (11.38 inch) longer, 160 mm (6.30 inch) higher, 7 kg (15 lbs) lighter and has 89 liters (3.14 ft3) bigger cargo space than BMW 8 Series (G15) (2019).