BMW 4 Series (2016) is 600 kg (1,323 lbs) lighter than Porsche Cayenne (2017).
Porsche Cayenne (2017) is 157 mm (6.18 inch) longer, 84 mm (3.31 inch) wider, 305 mm (12.01 inch) higher and has 225 liters (7.95 ft3) bigger cargo space than BMW 4 Series (2016).