BMW 5 Series (2017) is 1477 mm (58.15 inch) longer, 247 mm (9.72 inch) wider, 31 mm (1.22 inch) higher and has 373 liters (13.17 ft3) bigger cargo space than Citroen C1 (2017).
Citroen C1 (2017) is 759 kg (1,673 lbs) lighter than BMW 5 Series (2017).