BMW 7 Series (2020) is 629 mm (24.76 inch) longer, 94 mm (3.70 inch) wider, 172 mm (6.77 inch) higher and has 370 liters (13.07 ft3) bigger cargo space than Porsche 911 (2015).
Porsche 911 (2015) is 470 kg (1,036 lbs) lighter than BMW 7 Series (2020).