2015 Audi S4 Problems, Recalls & Reliability
Verdict
No verdictComplaint Index
0/100
#11 most-complained of 11 S4 years
The 2015 Audi S4 has a complaint index of 0, the lowest among the 11 model years with data, with just 1 complaint and 1 recall on record. It ranks 11th (best) of all years listed.
- Complaints
- 1
- Recalls
- 1
- Crashes / fires
- 0 / 0
- Injuries / deaths
- 0 / 0
- NHTSA overall rating
- 5 / 5 ★
- EPA combined MPG
- 20.5
- 17.5 city / 27 hwy
Top 2015 Audi S4 problems
NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.
- Engine1 (100%)
What owners report
- Owners report the R&R valve/oil separator unit failing, which can let oil and anti-freeze mix and risk seizing the engine.
- One owner noticed unusual noise as the only warning sign before the failure was caught and repaired.
- The failure in the sample complaint occurred at 71,000 miles.
2015 Audi S4 recalls
1 NHTSA recall campaign list this model year.
- NHTSA 14V667000Oct 24, 2014Airbags101,938 vehicles
Air bags
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2013-2015 Audi A4 and S4 vehicles manufactured February 16, 2012, to October 21, 2014, and 2013-2015 Audi Allroad vehicles manufactured March 12, 2012, to October 21, 2014. Due to an improper algorithm in the air bag control module, if a crash necessitates deployment of the side air bags, a second impact to the front of the vehicle may not command the front air bags to also deploy.
Risk: If the front air bags do not deploy in the event of a secondary impact to the front of the vehicle, there is an increased risk of occupant injury.
Remedy: Volkswagen will notify owners, and Audi dealers will update the air bag control unit software, free of charge. The recall began on November 14, 2014. Owners may contact Audi customer service at 1-800-822-2834. Volkswagen's number for this recall is 69K5.
2015 Audi S4 fuel economy and fuel cost
- City
- 17.5 MPG
- Highway
- 27 MPG
- Combined
- 20.5 MPG
- Annual fuel cost (EPA)
- $3,900
- 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 S4 years
Frequently asked questions
- Is the 2015 Audi S4 reliable?
- Based on NHTSA data, the 2015 Audi S4 has a complaint index of 0, the lowest of the 11 model years tracked, with only 1 complaint filed.
- What problems does the 2015 Audi S4 have?
- NHTSA lists 1 complaint for the 2015 Audi S4, related to the engine, specifically the R&R valve/oil separator unit.
- Does the 2015 Audi S4 have any recalls?
- Yes, one recall (campaign 14V667000) covers the airbag control unit software on 2013-2015 Audi A4, S4, and Allroad vehicles.
- How does the 2015 Audi S4 compare to other S4 years?
- The 2015 model ranks 11th of 11 years by complaint index, meaning it has fewer reported problems than the 2010, 2011, 2012, 2013, 2014, 2018, 2020 model years listed.