Audi’s 4-liter twin-turbo V8 has been in production since 2012. The first generation of this motor  (designated EA8124, which we covered here) powered the flagship A8, as well as S/RS variants of the A6 and A7. In 2017 (Porsche Panamera), and 2020 (Audi models), the second generation 4.0t, designated EA825, replaced it. Depending on the […]