Kia Optima (2018) is 895 mm (35.24 inch) longer, 176 mm (6.93 inch) wider, 45 mm (1.77 inch) higher and has 250 liters (8.83 ft3) bigger cargo space than MINI Cooper Clubman (2016).
MINI Cooper Clubman (2016) is 275 kg (606 lbs) lighter than Kia Optima (2018).