BMW 5 Series Gran Turismo (2020) is 614 mm (24.17 inch) longer, 78 mm (3.07 inch) wider and has 122 liters (4.31 ft3) bigger cargo space than Citroen C4 (2014).
Citroen C4 (2014) is 11 mm (0.43 inch) higher and 465 kg (1,025 lbs) lighter than BMW 5 Series Gran Turismo (2020).