BMW Z4 (2018) is 10 mm (0.39 inch) wider and 412 kg (908 lbs) lighter than Mercedes E-Class (Estate) (2017).
Mercedes E-Class (Estate) (2017) is 571 mm (22.48 inch) longer, 192 mm (7.56 inch) higher and has 389 liters (13.74 ft3) bigger cargo space than BMW Z4 (2018).