2001 Audi A6 Engine cooling Problems
- Complaints
- 18about this part
- Share
- 16%of 113 total for the year
- Median mileage
- 67,500miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 18 complaints about the engine cooling of the 2001 Audi A6, 16% of the 113 complaints for this model year. Where a mileage was given, the median is 67,500 miles. 1 of these say a crash was involved and 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Audi A6 quattp with twin turbo, oil pump failure due to coking from turbos. Exact same problem as the recall on the 1.8 turbo engine. I feel that my engine should be included even though it is a 2.7 litre engine.”
NHTSA complaint #10374844, filed 2011-01, 117,000 miles“Hi Audi 2001 A6 atq 2.8l quattro. Can you investigate the material used on the coolant and windshield wiper reservoirs as I had them crack twice. Also, I brought my car in asked that all recall work be done, I want to be assured that the sensor warranty work was done on the engine coolant temp sensor, oil leaks in upper engine, 3 way catalyst DTC codes sensor as I am getting a check engine light and have already spent over $900 to repair this. Can I get the vacuum hose and tire information as well. …”
NHTSA complaint #10239127, filed 2008-08, 89,000 miles“Huge oil leak on my 2001 Audi A6 4.2 caused by the pcv valve freezing closed. This has happened to my car 3 times in the last 2 years. This only happens during extreme cold weather, colder that -10 deg f. No indication of the freeze problem until the car slows to below highway speeds and you can smell the oil burning. The pcv valve freezes closed which allows pressure to build in the crankcase of the engine causing overpressure and oil to be forced out of the valve cover gaskets, ignition coil seals, cam seals and crank seals. …”
NHTSA complaint #10260167, filed 2009-02, 78,000 miles“I have a 2001 Audi A6 2.7t and it has almost caused me to get into severe accidents where I would have been seriously injured or killed in a side impact collision. The culprit is this: if you depress the brake (as if you were stopping or coming to a complete stop) and try to reaccelerate, there is little to no acceleration. This hesitation has almost got me killed several times. There are hundreds of other Audi A6 consumers regardless of model engine (2.8, 2.7t, 3.0 and 4.2) that have experienced this problem. …”
NHTSA complaint #10042986, filed 2003-10, 29,000 miles“Car burns oil 1/2 quart/1000 mi. Almost runs out before warning light comes on. Audi says this is normal- we have had two emergencies on the freeway where we almost ran out of oil. Also, it is very hard to read the oil dip stick- it is artful not useful. Rotors (all) failed at 14k miles and had to be replaced. We are advised we are not alone. Audi corp arrogant and will not respond. Throws everything back to dealer. Dealer fixed rotor problem at no cost. Tried to charge for oil test repair. Believe there are design issues in both instances. …”
NHTSA complaint #10023239, filed 2003-06, 14,048 milesRelated 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 2001 Audi A6
19 complaintsAir bags
15 complaintsBrakes
14 complaintsElectrical system
14 complaintsTransmission and drivetrain
14 complaintsTires
11 complaintsExterior lighting
6 complaintsBody and structure
5 complaintsVehicle speed control
5 complaintsOther or unknown
4 complaintsSuspension
4 complaintsEquipment
3 complaints
← All problems reported for the 2001 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