Most-reported problems

Across 1 owner complaints filed on the 2015 Audi S4

• Engine100%

Share of complaints naming each system — a signal of what owners report most on this model, not a failure rate. The denominator is people who filed a complaint, not every owner. Complaints are filed with the US regulator; the same models are sold in Canada.

Safety recalls

1 campaign issued by the manufacturer

• 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.

  Campaign 14V667000

Recall campaigns are manufacturer-issued and fixed free of charge. This is the US campaign set matched by year, make and model — it is not a check against a specific VIN, and Canadian campaigns may differ.