Audi R8 Spyder (2020) is 48 mm (1.89 inch) longer, 143 mm (5.63 inch) wider and has 64 liters (2.26 ft3) bigger cargo space than Porsche Cayman (2016).
Porsche Cayman (2016) is 53 mm (2.09 inch) higher and 250 kg (551 lbs) lighter than Audi R8 Spyder (2020).