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moderate Owners of the 2017 Audi S6 have filed 4 NHTSA complaints about the engine at roughly $3,100 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
| Model year | engine complaints |
|---|---|
| 2013 S6 | 28 |
| 2014 S6 | 12 |
| 2015 S6 | 3 |
| 2016 S6 | 10 |
| 2017 S6 (this page) | 4 |
Of the 4 engine complaints filed for the 2017 Audi S6, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
No new NHTSA engine complaint has been filed on this vehicle in over 7 years — the issue may be aging out of the active population.
Worn bearings can cause the turbine wheel to contact the turbocharger housing or cause the shaft to break, causing an engine stall and increasing the risk of a crash.
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km.
full bulletin at NHTSA ↗This bulletin provides informaiton when the engine is not running smoothly, misfiring.
full bulletin at NHTSA ↗This bulletin provides information when DTC U140A00 Terminal 30 is stored in the ECM.
full bulletin at NHTSA ↗This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
full bulletin at NHTSA ↗This bulletin provides information on the use of the Audi frequencly analysis app, and where the application can be downloaded.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
OEM turbos fail on Audi 2013-2017 s6/s7/s8/rs6/rs7 due to oil starvation caused by clogged OEM oil strainer. This is a safety issue as the failure happens without warning and as it generally happens while while driving the sudden loss of power could lead to a serious accident. This issue appears to be wide-spread based on discussions available on online forums. Audi is aware of these failures…
Turbo power feels to have gradually declined upon approaching 50k miles. It is caused by clogged turbo oil screens. $3000+ repair with no help from Audi brand and dealer for a widely known issue. Additionally the o2 sensors have randomly throw error for running lean. Replaced o2 sensor but issue came back. Have already tested MAF sensor and vetted for vacuum, exhaust leaks. Also a known issue…
Audi s6 4.0 tt, the car I own are notorious in oil screen problems. They starve the turbos with no oil and cause failure to them. I am one of the person that has to deal with the issue.
I'm NOT sure if this would have developed to an safety issue, I'll let your team decide. At my scheduled 50,000 mile dealer service (50,219 miles) I was informed that both motor mounts had failed and needed replacement. The service rep said that THEY found a fault code for one mount and a visual inspection confirmed that the other mount had also failed. Both mounts had sensors but I DID NOT…
It's a documented issue but not catastrophic. 4 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
Based on the 4 complaints filed, engine issues most often appear around 39,998 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Yes — 1 active recall(s) cover engine issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.