BMW 4 Series (2016) is 430 kg (948 lbs) lighter than BMW 5 Series Touring (2016).
BMW 5 Series Touring (2016) is 298 mm (11.73 inch) longer, 30 mm (1.18 inch) wider, 174 mm (6.85 inch) higher and has 115 liters (4.06 ft3) bigger cargo space than BMW 4 Series (2016).