BMW 1 Series (2014) is 630 kg (1,389 lbs) lighter than BMW 5 Series Gran Turismo (2015).
BMW 5 Series Gran Turismo (2015) is 646 mm (25.43 inch) longer, 152 mm (5.98 inch) wider, 148 mm (5.83 inch) higher and has 140 liters (4.94 ft3) bigger cargo space than BMW 1 Series (2014).