Kia Optima (2015) is 1141 kg (2,515 lbs) lighter than Lincoln Navigator (2014).
Lincoln Navigator (2014) is 479 mm (18.86 inch) longer, 169 mm (6.65 inch) wider, 473 mm (18.62 inch) higher and has 1290 liters (45.56 ft3) bigger cargo space than Kia Optima (2015).