BMW 4 Series (2020) is 301 kg (664 lbs) lighter than BMW 5 Series Touring (2018).
BMW 5 Series Touring (2018) is 238 mm (9.37 inch) longer, 43 mm (1.69 inch) wider, 182 mm (7.17 inch) higher and has 130 liters (4.59 ft3) bigger cargo space than BMW 4 Series (2020).