BMW 8 Series (G14) (2018) is 53 mm (2.09 inch) wider than Kia Cadenza (2014).
Kia Cadenza (2014) is 123 mm (4.84 inch) longer, 137 mm (5.39 inch) higher, 259 kg (571 lbs) lighter and has 100 liters (3.53 ft3) bigger cargo space than BMW 8 Series (G14) (2018).