Audi S6, S6 Avant, S7 Break Cover With 3.0-litre V6 TDI Diesel Power, 48V Mild Hybrid System Auto News Gokul | April 15, 2019 Audi has taken the wraps off the new S6, S6 Avant, and S7 Sportback with new fresh looks, new engine, as well as new tech.The big news is the ...