BMW 7 Series (2019) is 265 mm (10.43 inch) longer and 210 kg (463 lbs) lighter than Porsche Cayenne (2017).
Porsche Cayenne (2017) is 52 mm (2.05 inch) wider, 221 mm (8.70 inch) higher and has 155 liters (5.47 ft3) bigger cargo space than BMW 7 Series (2019).