Mercedes E-Class (2019) is 511 mm (20.12 inch) longer, 272 mm (10.71 inch) wider and has 270 liters (9.53 ft3) bigger cargo space than Seat Leon (2020).
Seat Leon (2020) is 62 mm (2.44 inch) higher and 208 kg (459 lbs) lighter than Mercedes E-Class (2019).