Audi S6 (C7)

83 sales analyzed · 4 topics from real Bring a Trailer & Cars & Bids comments.

The C7 S6 (US-market 2013-2018 sedan, with the C7.5 facelift from 2016) is a ~420 hp 4.0L twin-turbo V8 super-sedan with cylinder-on-demand, a 7-speed dual-clutch, quattro, and air suspension — the same 4.0 TT V8 family found in the S7/RS6/RS7 (and related to the Panamera/Urus). Owners pitch it as a discount RS7: 80-90% of the car for far less money, in an understated body. …

“Not many realize the S6 of this era packs the same twin turbo V8 engine as the Lamborghini Urus.”TheFJGuy · Mar 3, 2025

A discount RS7 — same twin-turbo V8, less moneyvalue-and-market
The core value argument is that the S6 shares most of its hardware with the RS7 — the same 4.0 TT V8 family (related to the Lamborghini Urus engine) — in a more understated body and without the RS7 price premium. Owners see it as an under-appreciated way into big twin-turbo V8 performance. …
The 4.0 TT V8: verify the oil-strainer recallmechanical
The headline mechanical item is the turbo oil-strainer/screen recall — an oil-supply concern that can lead to turbo failure. The must-do is confirming the recall was completed (ideally with the upgraded element and a turbo inspection), verifying it independently by VIN, and keeping oil changes frequent (every 3-5k). …
Refined, loaded, and easy to live withownership-experience
Owners highlight the breadth of the everyday experience: air suspension, comfortable rear seating, strong steering feel, a good sound system, and a long luxury features list — a genuinely refined daily that happens to have a twin-turbo V8. …
Peak-C7 build quality — buy a well-kept, recall-done carbuying-advice
Industry-side owners rate the C7 as the high point of Audi build quality to that date, which is part of why a clean, well-documented example is worth chasing. Pair that with verifying the oil-strainer recall, full service records, frequent oil history, and any Carfax damage entries before buying. …