Cadillac SRX (2015) is 50 mm (1.97 inch) wider and 197 mm (7.76 inch) higher than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 4 mm (0.16 inch) longer, 379 kg (836 lbs) lighter and has 16 liters (0.57 ft3) bigger cargo space than Cadillac SRX (2015).