2009 Audi A4 Other or unknown Problems
- Complaints
- 7about this part
- Share
- 6%of 120 total for the year
- Median mileage
- 79,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the other or unknown of the 2009 Audi A4, 6% of the 120 complaints for this model year. Where a mileage was given, the median is 79,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“We bought two 2009 Audi A4's for our children. Last month one went to the the dealer because the engine failed and needed to be rebuilt because of oil consumption issue, while there the dealer informed us that the water pump was failing and needed to be replace. I questioned the dealer and called an independent Audi mechanic, both said the same thing, we were lucky it lasted this long Audi has known from the beginning that this water pump is flawed and should have been recalled. …”
NHTSA complaint #10877055, filed 2016-06, 79,000 miles“Purchased around jan 2013 with apx. 30,000 mi. Noticed right away the add oil indicator coming on. After adding a quart of oil a couple of times between oil changes and even taking into the dealership for them to add oil, I questioned the oil consumption of the car knowing that no car uses that much oil between oil changes. The dealership assured me there were no issues at first. After having the dealership do my oil changes and the add oil indicator continuing to come on, I finally stated to dealership there is a problem and it needed to be looked into. …”
NHTSA complaint #10743630, filed 2015-07, 35,000 miles“Since the moment I purchased this vehicle in 2012, I've had nothing but constant issues. This vehicle has stopped in the middle of the street on the freeway (surprised I was not hurt because of this). I've had engine lights on, check oil level lights on, alternator going bad, esp lights on, bearings replacement. You name it, its happened. I took my Audi in for an appraisal and turns out the transmission is going bad, had warranty and Audi services did not mention any issues with my transmission, wasn't until my warranty had expired when I found this out. This vehicle should be recalled.”
NHTSA complaint #10886168, filed 2016-07, 35,000 miles“The timing chain tensioner failed causing the Audi interference engine to become out of sync resulting in the engine becoming totaled. This has become a common occurrence and is widely reported on 2009 and newer models. Below is an article with their assessment of the situation. The car had been taken in 2x for misfires and was diagnosed as an issue with the spark plugs, it is now clear that this was the timing chain being out of alignment and missed. …”
NHTSA complaint #10733773, filed 2015-07, 84,000 miles“The timing chain tensioner failed causing the Audi interference engine to become out of sync resulting in the engine becoming totaled. This has become a common occurrence and is widely reported on 2009 and newer models. Below is an article with their assessment of the situation. The car had been taken in 2x for misfires and was diagnosed as an issue with the spark plugs, it is now clear that this was the timing chain being out of alignment and missed. …”
NHTSA complaint #10733776, filed 2015-07, 84,000 milesRelated service bulletins
- 11032137Apr 22, 2026This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
- 11022664Aug 19, 2025This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
- 11021447Jul 10, 2025This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
- 11011240Nov 20, 2024This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
- 11009983Oct 7, 2024Vehicle Concerns Before Recall Repair Available
- 11009313Sep 18, 2024This bulletin provides guidance in order to provid informaiton regarding preparatoin when calling the Audi Technical Assistnce Center (TAC).
- 11005848Jul 2, 2024This bulletin provides Audi technicians with information to prepare for contact to the Technical Assistance Center (TAC).
- 11002208May 7, 2024This bulletin provides information on the ordering procedures for VIN Plates, and Safety Certification labels.
- 11002108May 7, 2024This bulletin provides information on the ordering procedures for VIN Plates, and Safety Certification labels.
- 10254006Apr 29, 2024This bulletin provides information when the air conditioning is no longer operative; DTC 00457, 00256, 01592.
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 1 | 10% |
| 2022 | 3 | 50% |
| 2021 | 3 | 27% |
| 2020 | 60 | 47% |
| 2019 | 3 | 30% |
| 2018 | 18 | 40% |
| 2017 | 10 | 18% |
| 2016 | 1 | 9% |
| 2015 | 2 | 11% |
| 2014 | 2 | 6% |
| 2013 | 3 | 13% |
| 2010 | 1 | 2% |
| 2009 | 7 | 6% |
| 2008 | 2 | 1% |
| 2007 | 8 | 4% |
| 2006 | 7 | 2% |
| 2005 | 3 | 1% |
| 2004 | 6 | 3% |
| 2003 | 2 | 1% |
| 2002 | 4 | 2% |
| 2001 | 4 | 3% |
| 2000 | 2 | 2% |
| 1999 | 2 | 1% |
| 1998 | 2 | 1% |
| 1997 | 2 | 2% |
| 1996 | 6 | 7% |
Other parts of the 2009 Audi A4
44 complaintsAir bags
33 complaintsSteering
15 complaintsFuel system
8 complaintsBody and structure
6 complaintsTransmission and drivetrain
6 complaintsVisibility (wipers, defrost, mirrors)
6 complaintsEngine cooling
5 complaintsSuspension
5 complaintsExterior lighting
4 complaintsElectrical system
3 complaintsVehicle speed control
3 complaints
← All problems reported for the 2009 Audi A4
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology