Bugatti Chiron (2016) is 178 mm (7.01 inch) wider than Kia Optima (2016).
Kia Optima (2016) is 311 mm (12.24 inch) longer, 253 mm (9.96 inch) higher, 453 kg (999 lbs) lighter and has 459 liters (16.21 ft3) bigger cargo space than Bugatti Chiron (2016).