BMW 6 Series Gran Turismo (2018) is 560 mm (22.05 inch) longer, 31 mm (1.22 inch) wider, 34 mm (1.34 inch) higher and has 144 liters (5.09 ft3) bigger cargo space than Citroen DS5 (2020).
Citroen DS5 (2020) is 291 kg (642 lbs) lighter than BMW 6 Series Gran Turismo (2018).