BMW 8 Series (G15) (2018) is 42 mm (1.65 inch) wider than Kia Optima (2016).
Kia Optima (2016) is 12 mm (0.47 inch) longer, 124 mm (4.88 inch) higher, 334 kg (736 lbs) lighter and has 90 liters (3.18 ft3) bigger cargo space than BMW 8 Series (G15) (2018).
