BMW 7 Series (2018) is 128 mm (5.04 inch) longer, 60 mm (2.36 inch) higher and has 69 liters (2.44 ft3) bigger cargo space than Porsche Panamera (2014).
Porsche Panamera (2014) is 29 mm (1.14 inch) wider and 91 kg (201 lbs) lighter than BMW 7 Series (2018).