2003 Audi A6 Engine cooling Problems
- Complaints
- 3about this part
- Share
- 5%of 66 total for the year
- Median mileage
- 23,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine cooling of the 2003 Audi A6, 5% of the 66 complaints for this model year. Where a mileage was given, the median is 23,000 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.
“Faulty ignition coils (so far 3 out of 6 cylinders went bad). On three occasions after starting and putting the car into the gear, shaking ensued and the check engine light turned on. The car had to be towed each time to the dealer where the faulty parts were replaced.”
NHTSA complaint #10149902, filed 2006-02, 23,000 miles“At times when driving the car the acceleration becomes slow and it stalls with a jerk like it's going to just stop also, when the car is put in reverse gear it will not move. I am stuck. The prnd flashing on the dashboard. I become afraid because this can cause serious accidents.”
NHTSA complaint #10629775, filed 2014-08“While driving vehicle stalled on numerous occasions. Driver was making a left turn at an intersection and vehicle stalled. Driver t was unable to restart vehicle. Mechanic claimed that this problem could not be determined nor duplicated. Driver informed the mechanic that this problem happened more than once and has not been solved. This is the 4th time car has been to the dealer for this problem. If problem happens again, consumer will return to the dealer.”
NHTSA complaint #10113392, filed 2005-03Related service bulletins
- 10123764Sep 8, 2015Supersedes Technical Service Bulletin Group 19 number 15-61 dated July 7, 2015. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been…
- 10128399Jul 7, 2015Supersedes Technical Service Bulletin Group 19 number 14-50 dated June 20, 2014. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have…
- 10119945Mar 17, 2015Supersedes Technical Service Bulletin Group 10 number 13-10 dated September 5, 2013. Prior to engine replacement, any debris lodged in transferred assemblies must be removed. If…
- 10119946Mar 6, 2015Supersedes Technical Service Bulletin Group 17 number 13-35 dated January 9, 2013. This bulletin lists engine oils that meet Audi oil quality standards (VW 501 01, 502 00, 505…
- 10120682Feb 13, 2015Supersedes Technical Service Bulletin Group 01 number 13-69 dated February 14, 2013. Noises and inconsistent engine operation after cold start during the catalyst heating phase…
- 10231130Jun 30, 2014Idenifying and mixing factory fill engine coolants
- 10122415Jun 20, 2014Supersedes Technical Service Bulletin Group 19 number 13-41 dated June 20, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have…
- 10210680Jun 3, 2014As the sump pan gasket settles, the torque of the bolts decreases and the seal may leak. Automatic transmission fluid is leaking at the sump pan gasket.
- 10121324Sep 5, 2013Supersedes Technical Service Bulletin Group 10 number 10-02 dated September 14, 2010. Prior to engine replacement, any debris lodged in transferred assemblies must be removed. If…
- 10216662Jun 20, 2013Discontinuation and mixing of Audi-approved engine coolants.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 1 | 6% |
| 2016 | 2 | 4% |
| 2015 | 4 | 18% |
| 2014 | 1 | 2% |
| 2013 | 1 | 2% |
| 2012 | 3 | 5% |
| 2010 | 2 | 12% |
| 2008 | 3 | 4% |
| 2007 | 3 | 6% |
| 2006 | 2 | 3% |
| 2005 | 3 | 3% |
| 2004 | 3 | 9% |
| 2003 | 3 | 5% |
| 2002 | 15 | 17% |
| 2001 | 18 | 16% |
| 2000 | 21 | 14% |
| 1999 | 17 | 8% |
| 1998 | 6 | 5% |
| 1997 | 1 | 5% |
| 1996 | 2 | 4% |
| 1995 | 1 | 6% |
Other parts of the 2003 Audi A6
21 complaintsElectrical system
14 complaintsTransmission and drivetrain
10 complaintsBrakes
6 complaintsTires
6 complaintsEngine
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsElectronic stability control
2 complaintsExterior lighting
2 complaintsOther or unknown
2 complaintsSteering
2 complaintsBody and structure
2 complaints
← All problems reported for the 2003 Audi A6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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