Audi R8 Spyder (2020) is 83 mm (3.27 inch) wider than Kia Optima (2018).
Kia Optima (2018) is 429 mm (16.89 inch) longer, 230 mm (9.06 inch) higher, 95 kg (209 lbs) lighter and has 284 liters (10.03 ft3) bigger cargo space than Audi R8 Spyder (2020).