BMW 1 Series (2014) is 140 kg (309 lbs) lighter than BMW 3 Series Touring (2016).
BMW 3 Series Touring (2016) is 273 mm (10.75 inch) longer, 63 mm (2.48 inch) wider, 18 mm (0.71 inch) higher and has 135 liters (4.77 ft3) bigger cargo space than BMW 1 Series (2014).