BMW 5 Series Gran Turismo (2019) 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 120 mm (4.72 inch) higher and 289 kg (637 lbs) lighter than BMW 5 Series Gran Turismo (2019).