Kia Optima (2016) is 309 mm (12.17 inch) longer, 277 mm (10.91 inch) higher and has 315 liters (11.12 ft3) bigger cargo space than McLaren 675LT Coupe (2016).
McLaren 675LT Coupe (2016) is 235 mm (9.25 inch) wider and 232 kg (511 lbs) lighter than Kia Optima (2016).