Ford Mustang (2014) is 392 mm (15.43 inch) longer, 115 mm (4.53 inch) wider, 99 mm (3.90 inch) higher and has 174 liters (6.14 ft3) bigger cargo space than Porsche 718 Cayman (2017).
Porsche 718 Cayman (2017) is 371 kg (818 lbs) lighter than Ford Mustang (2014).