BMW 8 Series (G15) (2018) is 893 mm (35.16 inch) longer, 187 mm (7.36 inch) wider and has 135 liters (4.77 ft3) bigger cargo space than Citroen DS3 (2014).
Citroen DS3 (2014) is 117 mm (4.61 inch) higher and 779 kg (1,717 lbs) lighter than BMW 8 Series (G15) (2018).