BMW 4 Series (2014) is 238 kg (525 lbs) lighter than Mercedes E-Class (2015).
Mercedes E-Class (2015) is 241 mm (9.49 inch) longer, 246 mm (9.69 inch) wider, 36 mm (1.42 inch) higher and has 95 liters (3.35 ft3) bigger cargo space than BMW 4 Series (2014).