This 2015 Audi S7 Premium Plus Sedan is heavily modified with RS7 Turbos, CTS Heat Exchanger, ARM Downpipes, CTS Intake Kit, Oil Screen Delete, and a Jackal Stage 3 Tune. Recent maintenance includes PCV, oil change, APR ignition coils, spark plugs, and new HPFPs and LPFP, ensuring it is mechanically strong. It features a comfort package with massage seats, Bose sound system, and a heads-up display, though cosmetically it could use some attention.