Kia Optima (2016) is 821 mm (32.32 inch) longer, 166 mm (6.54 inch) wider, 38 mm (1.50 inch) higher and has 227 liters (8.02 ft3) bigger cargo space than Seat Ibiza SC (2014).
Seat Ibiza SC (2014) is 541 kg (1,193 lbs) lighter than Kia Optima (2016).
