BMW 1 Series (2015) is 635 kg (1,400 lbs) lighter than BMW 5 Series Touring (2015).
BMW 5 Series Touring (2015) is 667 mm (26.26 inch) longer, 135 mm (5.31 inch) wider, 136 mm (5.35 inch) higher and has 200 liters (7.06 ft3) bigger cargo space than BMW 1 Series (2015).