BMW 8 Series (G15) (2019) is 51 mm (2.01 inch) wider than Cadillac XTS (2014).
Cadillac XTS (2014) is 289 mm (11.38 inch) longer, 160 mm (6.30 inch) higher, 12 kg (26 lbs) lighter and has 89 liters (3.14 ft3) bigger cargo space than BMW 8 Series (G15) (2019).