BMW 7 Series (2018) is 1148 mm (45.20 inch) longer, 187 mm (7.36 inch) wider, 20 mm (0.79 inch) higher and has 229 liters (8.09 ft3) bigger cargo space than Citroen DS3 (2014).
Citroen DS3 (2014) is 715 kg (1,576 lbs) lighter than BMW 7 Series (2018).