Kia Optima Sportswagon (2015) is 184 mm (7.24 inch) longer, 101 mm (3.98 inch) higher, 265 kg (584 lbs) lighter and has 238 liters (8.40 ft3) bigger cargo space than Nissan GT-R (2016).
Nissan GT-R (2016) is 35 mm (1.38 inch) wider than Kia Optima Sportswagon (2015).