BMW 8 Series (G14) (2018) is 2 mm (0.08 inch) wider and 62 kg (137 lbs) lighter than Kia K900 (2016).
Kia K900 (2016) is 252 mm (9.92 inch) longer, 147 mm (5.79 inch) higher and has 100 liters (3.53 ft3) bigger cargo space than BMW 8 Series (G14) (2018).