BMW 8 Series (G14) (2020) is 252 kg (556 lbs) lighter than Porsche Cayenne (2018).
Porsche Cayenne (2018) is 21 mm (0.83 inch) longer, 52 mm (2.05 inch) wider, 349 mm (13.74 inch) higher and has 320 liters (11.30 ft3) bigger cargo space than BMW 8 Series (G14) (2020).