2017 Audi S7 4.0L V8 Turbocharged DOHC 32V ULEV II 450hp 7-Speed Automatic S tronic quattro17/27 City/Highway MPGReviews:* Turbocharged V8 engine generates exhilarating power; hatchback layout makes it easy to stow luggage, cargo or the spoils of a shopping spree; interior materials and design are top-shelf; surprisingly good fuel economy. Source: Edmunds