Where is the engine number of the Audi S6 located?

[MacTravis]

The engine number of the Audi S6 is located on the engine block, and it can also be found on the vehicle's registration certificate. The Audi S6 is an imported model positioned as a mid-to-large-sized sedan, compliant with the Euro 5 emission standards. The 2018 Audi S6 adopts a front-engine, four-wheel-drive layout with a full-time all-wheel-drive system and a Torsen central differential. The dimensions of the Audi S6 Sport model are 4916mm in length, 2012mm in width, 1449mm in height, with a wheelbase of 2849mm. Its chrome-plated grille and S6 badge highlight its distinctive identity. The interior of the Audi S6 Sport largely retains the design language of the standard version, but the extensive use of carbon fiber materials on the dashboard and doors gives it a highly sporty feel.