Sign inCreate free garage
Problems · NHTSA complaints

2015 Audi S6 problems

Owners filed 5 complaints about the 2015 Audi S6 with NHTSA between Mar 2021 and Jul 2025. The most-cited component is engine (3).

Full 2015 S6 research
Complaints
5
Filed with NHTSA
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine3
  2. Steering1
  3. Suspension1
  4. Electrical system1
  5. Fuel/propulsion system1
  6. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 14, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20214
20220
20230
20240
20251

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine

3 reports1 crash
“Turbos blew causing the vehicle to lose power while trying to merge in traffic.”
Owner complaint to NHTSAFiled Sep 1, 2021EngineODI 11431421
Get this fixed

Steering

1 report
“Steering Module went out for no apparent reason. I was able to find a used one and have it repaired for just under $1000. I had git two quotes for to auto shops that specialize in Audi repairs and they were both over $5300 to repair this steering module. This is unacceptable.”
Owner complaint to NHTSAFiled Jul 23, 2025Steering, Suspension, Electrical systemODI 11675620
Get this fixed

Suspension

1 report
Get this fixed

Electrical system

1 report
Get this fixed

Fuel/propulsion system

1 report1 crash
“Multiple turbo failures. Engine shook violently then suddenly stopped in the middle of the road. This same issue happened 3 times affecting both turbos. It may be due to faulty oil filter/strainer. From online research (link below) this is a common problem for C7 Audi s6. https://www.audizine.com/forum/showthread.php/851578-2016-S6-4-0T-Turbo-Failure”
Owner complaint to NHTSAFiled Jun 11, 2021Engine, Fuel/propulsion systemCrash reportedODI 11420626
Get this fixed
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 14, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.