BMW 7 Series (2015) is 706 mm (27.80 inch) longer, 101 mm (3.98 inch) wider, 183 mm (7.20 inch) higher and has 365 liters (12.89 ft3) bigger cargo space than Porsche 718 Cayman (2017).
Porsche 718 Cayman (2017) is 359 kg (791 lbs) lighter than BMW 7 Series (2015).
