BMW 5 Series Touring (2020) is 548 mm (21.57 inch) longer, 92 mm (3.62 inch) wider, 122 mm (4.80 inch) higher and has 386 liters (13.63 ft3) bigger cargo space than Porsche 718 Cayman (2021).
Porsche 718 Cayman (2021) is 450 kg (992 lbs) lighter than BMW 5 Series Touring (2020).