2005 Audi A6 Engine cooling Problems
- Complaints
- 3about this part
- Share
- 3%of 91 total for the year
- Median mileage
- 90,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine cooling of the 2005 Audi A6, 3% of the 91 complaints for this model year. Where a mileage was given, the median is 90,000 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.
“Driving 55 MPH on the express way and the engine shut off completely. The car stalled until it came to a complete stop. The esp light and engine light came on. Restarted the car and problem continue 4 times. After the 4th attempt, I managed to get the car to the side of the road. After waiting several minutes, I restarted the car. The car still feel at times as if its going to stall.”
NHTSA complaint #10444942, filed 2012-01, 101,092 miles“On 1/25/2007 car was cold in garage. Would not start on first or second attempts. On third attempt the car turned over but the epc light illuminated and the entire vehicle was heavily shaking and rocking back and forth. No power to drive the vehicle. Had it towed to the dealership (schaumburg Audi). Dealer said the computer recorded multiple cylinder misfires but that there was nothing else they could find wrong. Car was kept overnight and returned to me when no further problems could be found and the event could not be replicated. Nothing was actually repaired and no parts replaced.”
NHTSA complaint #10182106, filed 2007-02, 35,500 milesRelated service bulletins
- 10181059Oct 5, 2020This bulletin contains instructions for using the UV additive to find engine oil leaks.
- 10176873Jun 25, 2020This bulletin contains instructions for identifying and mixing factory fill coolants.
- 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.
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 2005 Audi A6
43 complaintsElectrical system
16 complaintsBrakes
10 complaintsSteering
8 complaintsExterior lighting
6 complaintsElectronic stability control
5 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsEngine
4 complaintsVehicle speed control
4 complaintsBody and structure
3 complaintsTransmission and drivetrain
3 complaintsOther or unknown
2 complaints
← All problems reported for the 2005 Audi A6
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