Mercedes E-Class (2014) is 1322 mm (52.05 inch) longer, 209 mm (8.23 inch) wider and has 327 liters (11.55 ft3) bigger cargo space than Seat Mii (2017).
Seat Mii (2017) is 35 mm (1.38 inch) higher and 849 kg (1,872 lbs) lighter than Mercedes E-Class (2014).