Nissan Altima (2020) is 486 mm (19.13 inch) longer, 29 mm (1.14 inch) wider, 178 mm (7.01 inch) higher and has 274 liters (9.68 ft3) bigger cargo space than Porsche Cayman (2016).
Porsche Cayman (2016) is 43 kg (95 lbs) lighter than Nissan Altima (2020).