Kia Optima (2016) is 745 mm (29.33 inch) longer, 70 mm (2.76 inch) wider and has 160 liters (5.65 ft3) bigger cargo space than MINI Cooper Countryman (2014).
MINI Cooper Countryman (2014) is 97 mm (3.82 inch) higher and 206 kg (454 lbs) lighter than Kia Optima (2016).