BMW 1 Series (2014) is 401 kg (884 lbs) lighter than BMW 5 Series Touring (2018).
BMW 5 Series Touring (2018) is 646 mm (25.43 inch) longer, 147 mm (5.79 inch) wider, 154 mm (6.06 inch) higher and has 210 liters (7.42 ft3) bigger cargo space than BMW 1 Series (2014).