What are the common problems with the 2009 Audi A4?
Owners of the 2009 Audi A4 have filed 142 complaints with NHTSA, most often about the airbags (51) and the engine (45). In NHTSA's complaints file of November 11, 2026, 75 of them list a mileage; a complaint is an owner's report, not a proven defect.
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See what the paid report includes →NHTSA's file holds 142 owner complaints on the 2009 Audi A4. Owners named the airbags most often: 51 complaints, and half of the 5 that list a mileage came after 73,000 miles. A complaint can name more than one component. Of the 142 complaints, 6 report a crash, 3 report a fire and 2 report an injury (3 people reported injured). These are owners' reports to NHTSA, not findings.
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Common problems with the 2009 A4
NHTSA's file holds 142 owner complaints on the 2009 Audi A4. Owners named the airbags most often: 51 complaints, and half of the 5 that list a mileage came after 73,000 miles. A complaint can name more than one component.
| Component (NHTSA category) | Complaints | Listing mileage | Median mileage |
|---|---|---|---|
| Air Bags | 51 | 5 | 74,000 |
| Engine | 45 | 37 | 84,000 |
| Steering | 15 | 12 | 27,000 |
| Fuel/propulsion System | 9 | 7 | 69,000 |
| Engine And Engine Cooling | 6 | 4 | Under 5 mileages |
Of the 142 complaints, 6 report a crash, 3 report a fire and 2 report an injury (3 people reported injured). These are owners' reports to NHTSA, not findings.
Mileage when owners reported a problem with the 2009 A4
The 75 mileages owners gave run from 10 to 141,000 miles. A quarter are at or under 31,800 miles, half at or under 65,000, three quarters at or under 92,000 and nine in ten at or under 103,752; 9 (12%) came after 100,000 miles, none after 150,000 and none after 200,000.
These mileages say when owners reported a problem, not when a 2009 A4 wears out. NHTSA's file holds only vehicles whose owners complained; one that ran without a problem never appears in it, so it gives no lifespan and no cutoff, and how a vehicle was maintained matters more than any one odometer reading.
Most of these reports came early in the vehicle's life: 66 of the 75 came at or under 100,000 miles, so they say nothing about how many miles a 2009 A4 can cover.
| Measure | Value |
|---|---|
| Lowest mileage listed | 10 miles |
| 25th percentile | 31,800 miles |
| Median (50th percentile) | 65,000 miles |
| 75th percentile | 92,000 miles |
| 90th percentile | 103,752 miles |
| Highest mileage listed | 141,000 miles |
| Complaints after 100,000 miles | 9 (12%) |
| Complaints after 150,000 miles | none |
| Complaints after 200,000 miles | none |
Every model year together: Half of the 1,574 NHTSA owner complaints on the Audi A4 that list mileage came after 64,000 miles (NHTSA complaints file of November 11, 2026). How many miles will an Audi A4 last? →
Is the 2009 A4 a good year?
Complaint counts cannot say whether the 2009 is a good or a bad A4: they rise with how many were sold and how long they have been on the road. They show how the 2009 compares with the other model years in NHTSA's file.
With 142 complaints, the 2009 ranks 10th of the 27 Audi A4 model years from 1996 to 2023 with 10 or more complaints, counting from the most. The most: the 2006 (298). The fewest: the 2019 (10).
Recent model years have had less time to collect complaints, so their counts are still growing. No year is ranked by mileage here, because a year's median mileage mostly follows its age.
| Model year | Owner complaints | Listing mileage | Median mileage |
|---|---|---|---|
| 1996 A4 | 89 | 26 | 66,642 |
| 1997 A4 | 98 | 41 | 92,457 |
| 1998 A4 | 258 | 101 | 80,650 |
| 1999 A4 | 190 | 100 | 75,000 |
| 2000 A4 | 96 | 49 | 62,900 |
| 2001 A4 | 131 | 86 | 60,014 |
| 2002 A4 | 181 | 113 | 30,000 |
| 2003 A4 | 210 | 177 | 60,000 |
| 2004 A4 | 189 | 168 | 59,120 |
| 2005 A4 | 219 | 165 | 58,400 |
| 2006 A4 | 298 | 196 | 60,000 |
| 2007 A4 | 219 | 75 | 74,000 |
| 2008 A4 | 191 | 76 | 62,000 |
| 2009 (this page) | 142 | 75 | 65,000 |
| 2010 A4 | 64 | 50 | 81,500 |
| 2011 A4 | 11 | 6 | Under 10 mileages |
| 2012 A4 | 19 | 9 | Under 10 mileages |
| 2013 A4 | 24 | 15 | 101,000 |
| 2014 A4 | 32 | 13 | 80,000 |
| 2015 A4 | 19 | 6 | Under 10 mileages |
| 2016 A4 | 11 | 4 | Under 10 mileages |
| 2017 A4 | 57 | 12 | 28,000 |
| 2018 A4 | 45 | 4 | Under 10 mileages |
| 2019 A4 | 10 | 1 | Under 10 mileages |
| 2020 A4 | 128 | 3 | Under 10 mileages |
| 2021 A4 | 11 | 2 | Under 10 mileages |
| 2023 A4 | 11 | 1 | Under 10 mileages |
2009 Audi A4 recalls
NHTSA's recall files of November 11, 2026 list 6 recall campaigns that name the 2009 Audi A4. A campaign covers a production range, not every vehicle of the model year: check the VIN with NHTSA's free recall lookup.
| Campaign | Report received | Component |
|---|---|---|
| 18V427000 | Jun 22, 2018 | AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE |
| 18V082000 | Jan 30, 2018 | AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE |
| 18V004000 | Jan 4, 2018 | AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE |
| 17V032000 | Jan 11, 2017 | AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE |
| 16V376000 | May 27, 2016 | AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE-INACTIVE |
What these figures can and cannot tell you
- Complaints are owners’ reports to NHTSA. NHTSA publishes them without verifying them: a complaint is an allegation, not a defect finding.
- The mileage is what the owner wrote on the complaint; NHTSA does not check it against the odometer.
- The make, model and model year are the ones on the complaint. NHTSA records them as filed, so a few complaints sit under a model year the name was not sold in.
- They are not a lifespan study. The file holds only vehicles whose owners reported a problem, so these figures do not say how long a typical 2009 A4 lasts.
- A complaint count rises with how many vehicles were sold and how long they have been on the road, so it is not a rating of the 2009 A4.
- Nothing here describes one vehicle: its title brands, odometer readings, accidents and open recalls are in the records for its own VIN.
- 67 of the 142 complaints on the 2009 Audi A4 give no usable mileage (blank, zero, a filler such as 999999, or over 500,000) and are left out of every mileage figure.
- NHTSA names counted: A4 and A4 CABRIOLET. NHTSA files some vehicles under several names (a series name and a trim name, for example); this page counts only these.
- Recall-file names matched: A4 and A4 CABRIOLET.
Primary sources behind this page
Open the underlying public source and verify that its scope matches the question you are asking.
- NHTSA complaints flat file (FLAT_CMPL.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- Complaints file field layout (CMPL.txt)National Highway Traffic Safety Administration
- NHTSA recalls flat file (FLAT_RCL_PRE_2010.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- NHTSA recalls flat file (FLAT_RCL_POST_2010.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- Recalls file field layout (RCL.txt)National Highway Traffic Safety Administration
- NHTSA recall and complaint datasets: scope and documentationNational Highway Traffic Safety Administration
- Recalls Lookup by VINNational Highway Traffic Safety Administration
NHTSA’s complaints file was downloaded on November 11, 2026 (FLAT_CMPL.txt, dated 2026-11-11 10:15, 2,265,416 rows), with its recall files (FLAT_RCL_PRE_2010.txt and FLAT_RCL_POST_2010.txt, dated 2026-11-11 08:02). Each complaint is counted once, by its NHTSA number, with the model year and mileage of its first row; a model year has a page only with 10 or more complaints. The collection script and its rules are in scripts/collect-nhtsa-model-year-longtail.mjs.
2009 Audi A4 questions
What are the most common 2009 Audi A4 problems?
NHTSA's file holds 142 owner complaints on the 2009 Audi A4. Owners named the airbags most often: 51 complaints, and half of the 5 that list a mileage came after 73,000 miles. A complaint can name more than one component. Of the 142 complaints, 6 report a crash, 3 report a fire and 2 report an injury (3 people reported injured). These are owners' reports to NHTSA, not findings.
At what mileage do owners report problems with the 2009 Audi A4?
Of the 75 complaints on the 2009 Audi A4 that list mileage, the middle half came between 31,000 and 92,000 miles; 9 (12%) came after 100,000 miles, none after 150,000 and none after 200,000. These are mileages at a reported problem; they do not say how many miles a 2009 A4 can cover.
Is the 2009 Audi A4 a good year?
Complaint counts cannot say whether the 2009 is a good or a bad A4: they rise with how many were sold and how long they have been on the road. They show how the 2009 compares with the other model years in NHTSA's file. With 142 complaints, the 2009 ranks 10th of the 27 Audi A4 model years from 1996 to 2023 with 10 or more complaints, counting from the most. The most: the 2006 (298). The fewest: the 2019 (10).
How many recalls does the 2009 Audi A4 have?
NHTSA's recall files of November 11, 2026 list 6 recall campaigns that name the 2009 Audi A4. A campaign covers a production range, not every vehicle of the model year: check the VIN with NHTSA's free recall lookup.
How do I check a used 2009 Audi A4 before buying?
Take the 17-character VIN from the vehicle and compare the odometer with the readings on file for it: title transfers, inspections and auction sales record the mileage on the day. VIN Lookup (free-vin-lookup.com) sells the original ClearVIN PDF for $14.99 (3 reports for $29.99, 5 for $44.99): odometer readings, title brands and auction records on file for the VIN. Check the VIN before buying a used 2009 Audi A4.