BMW 3 Series Touring (2016) is 170 kg (375 lbs) lighter than BMW X4 (2018).
BMW X4 (2018) is 38 mm (1.50 inch) longer, 70 mm (2.76 inch) wider, 195 mm (7.68 inch) higher and has 5 liters (0.18 ft3) bigger cargo space than BMW 3 Series Touring (2016).