Kia Optima (2015) is 250 mm (9.84 inch) longer, 269 mm (10.59 inch) higher and has 360 liters (12.71 ft3) bigger cargo space than McLaren 600LT (2019).
McLaren 600LT (2019) is 70 mm (2.76 inch) wider and 187 kg (412 lbs) lighter than Kia Optima (2015).