BMW 5 Series Gran Turismo (2016) is 565 mm (22.24 inch) longer and 80 mm (3.15 inch) wider than BMW X1 (2018).
BMW X1 (2018) is 39 mm (1.54 inch) higher, 445 kg (981 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than BMW 5 Series Gran Turismo (2016).