Aston Martin DB9 (2014) is 341 mm (13.43 inch) longer and 80 mm (3.15 inch) wider than Porsche Cayman (2014).
Porsche Cayman (2014) is 10 mm (0.39 inch) higher, 380 kg (838 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than Aston Martin DB9 (2014).
