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ProblemsByVin File / 2015-AUDI-S4
2015 · audi

audi S4 problems

1 safety recall. 1 owner complaint. We mapped every trouble spot before you sign the papers.

0 5 10
Reliability score
9.4 / 10

Above-average reliability for the segment. Few systemic issues on file.

0
Critical
1
Severe
0
Moderate

What owners are saying recent NHTSA-filed complaints · verbatim

2015 S4 · engine
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,…
01/13/2023 · NHTSA ODI #11501592.0

Active recalls showing 1 of 1

severe NHTSA 14V667000 24/10/2014

Volkswagen Group of America, Inc

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.

Fix: 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.

Common questions

Is the 2015 Audi S4 reliable?

Mostly yes. With a reliability score of 9.4 out of 10 based on 1 owner complaints filed with NHTSA, the 2015 Audi S4 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.

What's the most common problem on the 2015 Audi S4?

No problem area has crossed our reporting threshold yet, which is a good sign for this vehicle.

What's the most expensive thing that goes wrong?

Major repair items haven't been flagged often enough on this vehicle to single one out.

How do I check if my Audi S4 has open recalls?

Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.

Is an extended warranty worth it on a 2015 Audi S4?

Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 1 complaints on file, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans aren't always better value.

Related vehicles

Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA) public records database, last synced 12 hours ago. Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics. We are not affiliated with audi. Some links on this page are affiliate links and we may earn a commission if you complete a quote or purchase.
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