BMW 3 Series Touring (2016) is 220 kg (485 lbs) lighter than BMW 7 Series (2018).
BMW 7 Series (2018) is 465 mm (18.31 inch) longer, 91 mm (3.58 inch) wider, 49 mm (1.93 inch) higher and has 19 liters (0.67 ft3) bigger cargo space than BMW 3 Series Touring (2016).