Audi A8 (2014) is 745 mm (29.33 inch) longer, 147 mm (5.79 inch) wider, 165 mm (6.50 inch) higher and has 224 liters (7.91 ft3) bigger cargo space than Porsche 718 Cayman (2017).
Porsche 718 Cayman (2017) is 544 kg (1,199 lbs) lighter than Audi A8 (2014).
