Audi R8 (2014) is 84 mm (3.31 inch) wider and 191 kg (421 lbs) lighter than Kia Optima Sportswagon (2018).
Kia Optima Sportswagon (2018) is 410 mm (16.14 inch) longer, 225 mm (8.86 inch) higher and has 341 liters (12.04 ft3) bigger cargo space than Audi R8 (2014).