BMW 4 Series Gran Coupe (2018) is 468 mm (18.43 inch) longer, 112 mm (4.41 inch) wider and has 133 liters (4.70 ft3) bigger cargo space than Citroen C4 Cactus (2020).
Citroen C4 Cactus (2020) is 91 mm (3.58 inch) higher and 837 kg (1,845 lbs) lighter than BMW 4 Series Gran Coupe (2018).
