2015 Audi S6 Problems, Recalls & Reliability
Verdict
CautionComplaint Index
62/100
#6 most-complained of 14 S6 years
The 2015 Audi S6 has a complaint index of 62, ranking 6th worst of 14 model years, earning a Caution verdict. Engine problems dominate at 60% of complaints, with two recalls covering turbocharger oil supply and airbag seat wiring.
- Complaints
- 5
- Recalls
- 2
- Crashes / fires
- 1 / 0
- Injuries / deaths
- 0 / 0
- NHTSA overall rating
- 5 / 5 ★
- EPA combined MPG
- 20
- 17 city / 27 hwy
Top 2015 Audi S6 problems
NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.
- Engine3 (60%)
- Electrical System1 (20%)
- Fuel System1 (20%)
- Other1 (20%)
- Steering1 (20%)
- Suspension, Wheels & Tires1 (20%)
What owners report
- Both turbochargers can fail together, causing the engine to shake violently and lose power suddenly while driving.
- Turbo bearings starve of oil when the oil feed line or strainer becomes blocked, a failure Audi service described as common on the 4.0 twin-turbo engine.
- Loss of power steering and braking assist has occurred at the same time as turbo failure, forcing drivers to steer to the shoulder without power assist.
- The steering module has failed with no apparent cause, requiring replacement.
2015 Audi S6 recalls
2 NHTSA recall campaigns list this model year.
- NHTSA 22V178000Mar 23, 2022Engine26,093 vehicles
Engine and engine cooling:engine:gasoline:turbo/supercharger
Volkswagen Group of America, Inc. (Audi) is recalling certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 vehicles. The turbocharger oil supply strainer can become blocked, causing wear to the bearings due to lack of lubrication.
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 crash.
Remedy: Dealers will replace the oil strainer and perform an oil change, free of charge. Owner notification letters were mailed August 4, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 21H7.
- NHTSA 18V370000Jun 4, 2018Airbags139,249 vehicles
Air bags:sensor:occupant classification
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S6 and S7, 2012-2018 A7 and A6 Sedan, and 2014-2018 RS7 vehicles equipped with basic seats (with or without heating). Stress or wear of the body-sensing mat within the front passenger seat may cause the Passenger Occupant Detection System (PODS) control module to malfunction.
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.
Remedy: Volkswagen will notify owners, and dealers will install a PODS system repair kit, free of charge. The recall began November 29, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 74D5.
2015 Audi S6 fuel economy and fuel cost
- City
- 17 MPG
- Highway
- 27 MPG
- Combined
- 20 MPG
- Annual fuel cost (EPA)
- $4,000
- 15,000 mi/yr
- Fuel
- Premium
- Current regular gas
- $4.32/gal
- national avg.
EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.
2015 compared with other S6 years
Frequently asked questions
- Is the 2015 Audi S6 reliable?
- NHTSA data gives the 2015 Audi S6 a complaint index of 62, ranking 6th worst among 14 model years, which puts it in the Caution category relative to other S6 years.
- What is the biggest problem with the 2015 Audi S6?
- Engine problems are the top issue, accounting for 60% of complaints, mostly involving turbocharger failures with a median failure mileage of 69,500.
- Does the 2015 Audi S6 have any recalls?
- Yes, NHTSA lists 2 recalls: one for a turbocharger oil supply strainer that can block and starve the bearings, and one for airbag seat wiring stress and wear.
- How does the 2015 Audi S6 compare to other S6 years?
- The 2015 model's complaint index of 62 is lower than 2013 (100), 2014 (92), and 2016 (85), which are all rated Avoid, but higher than 2017 (54) and later years.