Kia Optima Sportswagon (2020) is 135 kg (298 lbs) lighter than Mazda CX-9 (2015).
Mazda CX-9 (2015) is 251 mm (9.88 inch) longer, 76 mm (2.99 inch) wider, 258 mm (10.16 inch) higher and has 641 liters (22.64 ft3) bigger cargo space than Kia Optima Sportswagon (2020).