This 2015 Audi S6 in Quartz Gray Metallic features a black interior and has 63,830 miles, with documented servicing and California ownership from new. Notable modifications include 20-inch BBS CI-R wheels, a DS1 Stage 1 tune, and a Supersprint cat-back exhaust system, while factory equipment includes LED headlights, heated front seats, and a Bose sound system. The Carfax report notes a minor sideswipe collision in 2017, and the vehicle shows some exterior chips, wheel scratches, and interior wear.