Kia Optima (2017) is 309 mm (12.17 inch) longer, 282 mm (11.10 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 202 kg (445 lbs) lighter than Kia Optima (2017).