Audi S8 (2015) is 318 mm (12.52 inch) longer, 57 mm (2.24 inch) wider and has 156 liters (5.51 ft3) bigger cargo space than Nissan CrossCabriolet (2017).
Nissan CrossCabriolet (2017) is 214 mm (8.43 inch) higher and 983 kg (2,167 lbs) lighter than Audi S8 (2015).