Ford C-Max Energi (2015) is 852 mm (33.54 inch) longer, 184 mm (7.24 inch) wider, 143 mm (5.63 inch) higher and has 219 liters (7.73 ft3) bigger cargo space than Seat Mii (2017).
Seat Mii (2017) is 738 kg (1,627 lbs) lighter than Ford C-Max Energi (2015).