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Save2015 Audi S6 4.0T quattro$21,999Used108,302milesAll Wheel4.5sLeather5 seatsEst. ValueFair DealEngine4L V8 Gasoline 420hpTransmission7-Speed Double Clutch AutomaticEst. Fuel Economy (MPG)27Highway17CityVINWAUF2AFC0FN004666ElginElgin, IL 60120243847-429-2681Check Availability