Jaguar XJ-Series (2014) is 275 mm (10.83 inch) longer than Kia Optima (2015).
Kia Optima (2015) is 138 mm (5.43 inch) wider, 5 mm (0.20 inch) higher, 339 kg (747 lbs) lighter and has 80 liters (2.83 ft3) bigger cargo space than Jaguar XJ-Series (2014).