Audi S6 (2016) is 76 mm (2.99 inch) longer and 14 mm (0.55 inch) wider than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 30 mm (1.18 inch) higher, 345 kg (761 lbs) lighter and has 154 liters (5.44 ft3) bigger cargo space than Audi S6 (2016).
