RoadVitals

2015 Audi S4

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
1
Latest Jan 13, 2023
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
1
Latest Oct 24, 2014
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0

Overview

Our database contains 1 NHTSA owner-reported complaint for the 2015 Audi S4, most frequently naming the engine category. 1 safety recall has been issued covering this model year; and 683 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Engine1100.0%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

1 campaign cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
14V667000

AIR BAGS

Oct 24, 2014
101,938 units potentially affected
The defect: 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.
The 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.
The 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.
Volkswagen Group of America, Inc.Manufacturer number 69K5View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

Engine
Filed Jan 13, 2023

The R&R valve/oil separator unit failed on my 2015 Audi S4 at approximately 71,000 miles. This unit, when fails, can mix the oil and anti-freeze which can seize the engine. I was able to catch the problem before engine failure. Minneapolis Audi repaired the vehicle this week, 1/10/23. There were NO warning indicators except noise. Various media sources have stated that this is a known engine failure concern between 60-90K miles for this engine. Audi does not recognize this as a safety or warranty concern.

NHTSA ID
11501592
Incident
Jan 9, 2023

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

TSB_2074436_3

This bulletin provides information when the horn sound quality is poor.

TSB_2069904_3

SERVICE BRAKES

This bulletin provides information for all models regarding brake sounds.

TSB_2067132_4

SERVICE BRAKES

This bulletin provides information when there is corrosion on the friction survace of steel brake discs.

TSB_2069078_4

SERVICE BRAKES

This bulletin provides information on the zirconium insercts in the brake piston (ceramic brakes only).

TSB_2076945_2

STRUCTURE:BODY

This bulletin provides information about leather care and seat repair.

TSB_2072304_4

SERVICE BRAKES

This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Audi S4 by model year
YearComplaintsRecallsInvestigationsIssue Index
2026000—
2025000—
2024000—
2023000—
2022110—
2021240—
2020163041.2
2019210—
2018720—
2017000—
2016000—
2015Viewing110—
2014171031.6
2013331036.1
2012221040.2
2011261038.1
2010600034.4
2009020—
2008420—
2007132048.3
2006302040.3
2005432045.0
2004291034.7
2003110—
2002221032.7
2001871039.2
20001431039.6
1999000—
1998000—
1996010—
1995121—
1994721—
1993162145.8
1992521—
1991010—
1990010—
1989010—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.