Mercedes E-Class (2018) is 1322 mm (52.05 inch) longer, 426 mm (16.77 inch) wider and has 327 liters (11.55 ft3) bigger cargo space than Seat Mii (2014).
Seat Mii (2014) is 80 mm (3.15 inch) higher and 792 kg (1,746 lbs) lighter than Mercedes E-Class (2018).