BMW 5 Series (2018) is 993 mm (39.09 inch) longer, 152 mm (5.98 inch) wider, 41 mm (1.61 inch) higher and has 284 liters (10.03 ft3) bigger cargo space than Citroen DS3 (2014).
Citroen DS3 (2014) is 570 kg (1,257 lbs) lighter than BMW 5 Series (2018).