Kia Optima Sportswagon (2017) is 225 mm (8.86 inch) longer and 75 mm (2.95 inch) wider than Nissan X-Trail (2015).
Nissan X-Trail (2015) is 300 mm (11.81 inch) higher, 215 kg (474 lbs) lighter and has 125 liters (4.41 ft3) bigger cargo space than Kia Optima Sportswagon (2017).