Cadillac CTS-V (2014) is 4 mm (0.16 inch) longer than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 18 mm (0.71 inch) wider, 15 mm (0.59 inch) higher, 357 kg (787 lbs) lighter and has 165 liters (5.83 ft3) bigger cargo space than Cadillac CTS-V (2014).