Kia Optima Sportswagon (2018) is 580 mm (22.83 inch) longer and 92 mm (3.62 inch) wider than Mazda 6 Atenza (2018).
Mazda 6 Atenza (2018) is 72 mm (2.83 inch) higher, 533 kg (1,175 lbs) lighter and has 81 liters (2.86 ft3) bigger cargo space than Kia Optima Sportswagon (2018).
Size difference at a glance
Kia Optima Sportswagon (2018) is 13.6% longer than Mazda 6 Atenza (2018).
Kia Optima Sportswagon (2018) is 5.2% wider than Mazda 6 Atenza (2018).
Kia Optima Sportswagon (2018) is 4.7% lower than Mazda 6 Atenza (2018).
Kia Optima Sportswagon (2018) is 41.2% heavier than Mazda 6 Atenza (2018).
Kia Optima Sportswagon (2018) is 15.5% smaller in cargo space than Mazda 6 Atenza (2018).
Overall footprint
Kia Optima Sportswagon (2018) has a 19.5% larger overall footprint (length × width).
Side-by-side size
Length
Width
Height
Weight
Cargo space
Kia Optima Sportswagon (2018) Mazda 6 Atenza (2018)
