BMW 5 Series Gran Turismo (2018) is 504 mm (19.84 inch) longer, 46 mm (1.81 inch) wider and has 25 liters (0.88 ft3) bigger cargo space than BMW X1 (2020).
BMW X1 (2020) is 130 mm (5.12 inch) higher and 229 kg (505 lbs) lighter than BMW 5 Series Gran Turismo (2018).