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2015 Audi S6Problems, recalls & complaints

NHTSA has logged 5 owner complaints about the 2015 Audi S6, most often about the engine. It is covered by 2 safety recalls, and for recall 22V-178 the manufacturer reports only 79% of affected cars repaired.

2015 Audi S6
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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls2Lowest repair rate 79%Owner complaints51 with a crash, fire or injuryTypical failure mileage70kEngine, median miles

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through July 23, 2025. Updated daily. Photo: Elise240SX, CC BY-SA 4.0.

Complaints by system

Where the 2015 Audi S6 has problems

5 complaints grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Engine31
Electrical system10
Fuel/propulsion system11
Steering10
Suspension10

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

2 recalls

2015 Audi S6 recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

79%repaired · 2024 Q2

Gasoline: turbo/supercharger

Recall 22V-178 · Mar 23, 2022 · 26,093 vehicles · 20,680 repaired

Risk. 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…

Problem, fix and repair progress →

85%repaired · 2020 Q1

Sensor: occupant classification

Recall 18V-370 · Jun 4, 2018 · 139,249 vehicles · 117,762 repaired

Risk. If the PODS module malfunctions, the front passenger air bag may not deploy properly in the event of a crash, increasing the risk of injury.

Problem, fix and repair progress →

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Audi.

Best & worst years

2015 vs. every other S6 year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the S6 median. How we score

'92'93'94'95'96'97'98'99'00'01'02'03'04'07'08'09'10'11'13'14'15'16'17'18'20'21'22'23'24'25
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
NHTSA crash tests

2015 Audi S6 safety ratings

2015 Audi S6 4 DR AWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.

★★★★★Overall rating
  • Rollover: 5 stars (9.0% risk)
  • Stability control: Standard
  • Forward collision warning: Optional
  • Lane departure warning: No
2 investigations

NHTSA defect investigations

Federal investigations that included the 2015 Audi S6, and the recalls they led to.

  1. Engine Stall - Turbo FailureEA22001 · closed May 26, 2023
    No recall
  2. Engine Stall - Turbo FailurePE21009 · closed May 27, 2022
    Led to recall 22V-178
In owners' words

What S6 owners report

Recent engine complaints filed with NHTSA, shortened. Personal details are removed.

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.…
Complaint 11420626 · Jun 11, 2021
DRIVING ON THE NEW JERSEY TURNPIKE AND BOTH TURBOCHARGERS FAILED. CAR LOST POWER AND I HAD TO STEER TO SIDE OF THE HIGHWAY WITHOUT POWER STEERING AND BRAKES FROM FAR LEFT LANE. AUDI SERVICE SAYS BEARINGS STARVED OF OIL AND SEIZED. THEY SAID THIS IS A COMMON PROBLEM WITH THE 4.0 TWIN TURBO AUDI…
Complaint 11404426 · Mar 23, 2021 · 69,500 miles

Own a 2015 S6?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.