Citroen C1 (2017) is 594 kg (1,310 lbs) lighter than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 1389 mm (54.69 inch) longer, 240 mm (9.45 inch) wider, 2 mm (0.08 inch) higher and has 357 liters (12.61 ft3) bigger cargo space than Citroen C1 (2017).