Audi A8 (2017) is 780 mm (30.71 inch) longer, 144 mm (5.67 inch) wider, 178 mm (7.01 inch) higher and has 355 liters (12.54 ft3) bigger cargo space than Porsche 718 Cayman (2017).
Porsche 718 Cayman (2017) is 576 kg (1,270 lbs) lighter than Audi A8 (2017).
