BMW 8 Series (G15) (2019) is 343 mm (13.50 inch) longer and 43 mm (1.69 inch) wider than Citroen C5 (2020).
Citroen C5 (2020) is 349 mm (13.74 inch) higher, 422 kg (930 lbs) lighter and has 19 liters (0.67 ft3) bigger cargo space than BMW 8 Series (G15) (2019).