BMW 3 Series Touring (2018) is 314 mm (12.36 inch) longer, 22 mm (0.87 inch) wider and has 87 liters (3.07 ft3) bigger cargo space than Citroen C4 (2020).
Citroen C4 (2020) is 60 mm (2.36 inch) higher and 474 kg (1,045 lbs) lighter than BMW 3 Series Touring (2018).