BMW 5 Series Touring (2017) is 141 mm (5.55 inch) longer and 170 kg (375 lbs) lighter than Porsche Cayenne (2018).
Porsche Cayenne (2018) is 54 mm (2.13 inch) wider, 131 mm (5.16 inch) higher and has 110 liters (3.88 ft3) bigger cargo space than BMW 5 Series Touring (2017).