Citroen C6 (2020) is 55 mm (2.17 inch) longer and 10 kg (22 lbs) lighter than Kia Optima Sportswagon (2018).
Kia Optima Sportswagon (2018) is 1 mm (0.04 inch) wider, 7 mm (0.28 inch) higher and has 19 liters (0.67 ft3) bigger cargo space than Citroen C6 (2020).
