Kia Optima Sportswagon (2020) is 460 mm (18.11 inch) longer and 65 mm (2.56 inch) wider than Mazda CX-30 (2015).
Mazda CX-30 (2015) is 70 mm (2.76 inch) higher, 446 kg (983 lbs) lighter and has 435 liters (15.36 ft3) bigger cargo space than Kia Optima Sportswagon (2020).