A complaint is an unverified report a driver files with NHTSA about a problem they had. It is not a recall or a proven defect, and a popular model on the road in large numbers naturally collects more of them. Still, a cluster of complaints about one part is often the earliest public signal of a problem, sometimes years before a recall. Here is how the Audi A4 complaints break down.

Of those complaints, 49 mention a crash, 15 mention a fire, and 34 report an injury. These are owner-reported and not confirmed by NHTSA, but they are worth knowing when you weigh up a vehicle.

Most-reported Audi A4 problem areas

Audi A4 complaints by model year

2010
77
2011
63
2012
58
2013
133
2014
90
2015
55
2016
36
2017
123
2018
52
2019
21
2020
276
2021
20
2022
9
2023
16
2024
10

How to read these complaints

A few things are worth keeping in mind when you read these numbers. Complaints are self-reported and unverified, so they lean toward the problems owners noticed and bothered to report, not a clean sample of every vehicle. A model that sold in big numbers will gather more complaints than a rare one, even at the same defect rate, so the raw totals say as much about popularity as reliability. What is genuinely useful is the shape: a tight cluster of complaints about one part, especially one that also shows crashes, fires, or injuries, is the kind of pattern that sometimes turns into a recall or a federal investigation later.

What to do about a Audi A4 problem

If you own a Audi A4 and recognize one of these problems, start by checking whether it is already covered by a free recall repair, then look the vehicle up by its VIN to see what is open on your exact car. It is also worth filing your own complaint with NHTSA: complaints are how defects get noticed in the first place, and enough of them about the same part can trigger an investigation. Keep your repair records either way, since they matter for warranty and lemon-law claims. Start with the Audi A4 recall history, then run a VIN recall check for your specific vehicle.

Common questions about Audi A4 problems

What are the most common problems with the Audi A4?
Across 1,039 complaints to NHTSA for the 2010 to 2024 Audi A4, the most-reported areas are the engine, electrical system, and steering. A complaint is an owner report, not a confirmed defect, but the busiest categories point to where owners run into trouble.
How many complaints does the Audi A4 have?
NHTSA has 1,039 complaints on record for the Audi A4 across the 2010 to 2024 model years. Owners file these directly with NHTSA, so the count grows over time and tends to be higher for popular models.
Have any Audi A4 crashes or fires been reported?
Of those complaints, 49 mention a crash, 15 mention a fire, and 34 report an injury. These are owner-reported and not confirmed by NHTSA, but they are worth knowing when you weigh up a vehicle.
Are complaints the same as recalls?
No. A complaint is an unverified report from an owner. A recall is an official action by the manufacturer or NHTSA to fix a known safety defect, with a free repair. Complaints can be an early warning, but only a recall obligates a fix. The Audi A4 recall history is on its own page.

Complaints come from NHTSA's consumer complaints database and are reports filed by owners, not confirmed defects. See the methodology and data sources for detail. This page is a reference, not legal or safety advice.