Kia Optima Sportswagon (2015) is 105 mm (4.13 inch) longer, 40 mm (1.57 inch) wider and has 98 liters (3.46 ft3) bigger cargo space than Peugeot 408 (2020).
Peugeot 408 (2020) is 18 mm (0.71 inch) higher and 130 kg (287 lbs) lighter than Kia Optima Sportswagon (2015).