Kia Optima Sportswagon (2018) is 165 mm (6.50 inch) longer, 100 mm (3.94 inch) higher and has 125 liters (4.41 ft3) bigger cargo space than Nissan GT-R (2018).
Nissan GT-R (2018) is 35 mm (1.38 inch) wider and 101 kg (223 lbs) lighter than Kia Optima Sportswagon (2018).