Nissan GT-R (2018) is 312 mm (12.28 inch) longer, 95 mm (3.74 inch) wider, 77 mm (3.03 inch) higher and has 153 liters (5.40 ft3) bigger cargo space than Porsche Cayman (2019).
Porsche Cayman (2019) is 320 kg (705 lbs) lighter than Nissan GT-R (2018).