View Full Version : 2006 3.2 A6 Quattro questions

06-01-2011, 11:38 PM
I'm looking at buying a 2006 A6 Quattro with the 3.2 engine and was wondering what to look out for or to expect with this vehicle. It has approx 63,000 miles (mostly highway) and is in about as good of shape as you could expect for a mint car to be in. It has been totally babied. One person mentioned that these cars suffer from massive carbon build up in the intake ports and are prone to injector failures. Another question I have is can they be driven on regular 87 octane fuel if you are stuck somewhere that does not have premium fuel for sale. I understand there would be a performance loss, I'm more worried about gernading the motor with regular gas. Due to it being normally aspirated, I would assume it would be OK. Are there any things I should be looking out for with this car? Thanks in advance.

06-02-2011, 03:02 AM
I have pasted in two of my earlier posts, which I have slightly revised and updated.

I have an 05 4.2 that I purchased new about 6 years ago. She currently has 87k on the odometer. As far as reliability, she is ok, but she is no Lexus. But she is a lot of fun to drive. Most of the problems have been nuisances.

1. The airbag light came on two weeks after I purchased the car. It took them 10 days to figure out the problem. Audi then came out with a TSB on updating the computer software for the airbags.

2. The MMI "crashed" a year after I bought the car. After having the car for 8 days, Audi wiped the hardware clean and reinstalled the MMI computer software.

3. The MMI had a few bugs with not updating the satellite radio stations, losing surround settings and sometimes not automatically linking with my bluetooth phone. Audi had the car for a day and updated the MMI computer software. Audi has a TSB on this issue as well.

I have written those three problems off to having a very early computer software version. To give you an idea of the number of changes in the software, my car came with MMI version 10 and now has version 33. Since being updated to MMI version 33, about a year ago, I have not had any computer issues. I understand that there is now a version 46 that is available. Since my MMI has been stable with version 33 I have not upgraded to 46. From fellow Audi owners I understand that the differences between 33 and 46 are negligible.

As far as non-computer issues. I have had quite a few.

1. All 8 coil packs had to be replaced.

2. The lid for the gas cap would not open from inside the car. In order to open it I had to wedge my credit card inside the lid and open it from the outside.

3. The frame for the front passenger seat came loose and the entire seat had to be removed and the bolts tightened.

4. A rattle in the glove box area of the dashboard that required installation of additional insulation.

5. A bad tire pressure sensor had to be replaced.

6. A mildew smell from the air conditioner vents, which required the replacement of a ventilation duct.

7. A rattle from the rear fold down seats, which required a new clamp.

8. A rattle from the driver’s side of the dashboard, which required additional damping material.

9. The fuel-filter recall, which required a new fuel filter.

10. The fuel gauge started reading empty even though there is fuel in the tank, which required a computer software upgrade.

11. The transmission developed a chirping and the transmission software had to be upgraded.

12. The low coolant light would come on for no reason, which required an upgraded electrical circuit.

13. The power steering reservoir leaked and completely emptied itself, which required a revised clamp.

14. The front brakes developed a vibration at slow speeds and the brake caliper seals had to be replaced due to a re-design.

15. The motor for the power tilt/telescoping steering wheel had to be replaced because of a groaning noise.

16. The MMI knob fell off.

17. The motor for the rear power sunshade had to be replaced because that motor was groaning and clicking.

18. The coolant temperature gauge stopped working and the sensor had to be replaced.

19. The trunk latch ceased working and had to be replaced due to a redesign of the latch.

20. The adaptive headlight malfunction light came on and the dealer had to upgrade the software for the adaptive lights.

21. The air bag light came on and the rear air bag sensor had to be replaced for a second time.

22. The Parktronic broke and the speaker had to be replaced.

23. The coolant gauge broke again and the sensor had to be replaced.

24. The coolant gauge broke yet again and the thermostat had to be replaced.

25. The gas struts for the trunk were replaced.

26. The air bag light came on and rear air bag sensor had to be replaced for a third time.

27. The LED unit had to be replaced in the rear right because the brake and turn signal light would fail to fire.

28. The coil packs were replaced under recall.

29. The air bag light came on and a rear air bag sensor had to be replaced for a fourth time.

30. The brackets holding the electric switch panel to the front passenger seat broke and had to be replaced.

31. The air bag light returned and the dealer upgraded the software yet again.

32. The upper control arms were replaced.

33. The motor for the power tilt/telescoping steering wheel had to be replaced yet again.

Similar to the computer issues discussed above, Audi has TSBs on nearly all of these issues, seeming to indicate that the problems are not isolated to just my car. Audi has also issued dozens of other TSBs on issues that I have not experienced since I have the 4.2 engine instead of the 3.2 engine. In total, the 3.2 has over 200 TSBs. If you complain about these items while the car is under warranty, Audi will fix the problem for free, which sounds like a recall to me.

Despite the car being at the dealer for over 50 days for repairs during the last 75 months, not maintenance, I would certainly buy the car again because the 4.2 is a lot of fun to drive, especially on the highway, and the dealer gives me a loaner. However, I would check which MMI software version is currently in the car. If it is below 33, I would take it to Audi and have it updated as soon as possible. In addition, I would check the car's VIN and compare it to the Audi TSBs and see what issues you need to keep an eye on. You can get copies of the Audi TSBs at Erwin's website. The dealer will probably give you the car's maintenance records. While the car is still under warranty, I would make sure you complain about any issues contained on the TSBs issued for your VIN. If you are buying an aftermarket warranty I would get an exclusionary warranty that your local Audi dealer accepts.

Despite the issues with the car, I think that it is a great driving car. However, keep in mind that I am an original owner who paid close to $60,000 for my daily driver and who according to my wife is the President of the "More Money than Brains" club. For example, changing the transmission fluid costs over a $1,000 just for the fluid (the fluid is $57 per liter), not including labor. Also keep in mind that the 55,000 mile service is the "major" service for the car. The 75,000 mile service is also significant, in that the nose of the car needs to be removed on the 05 and 06 4.2s. If money is an issue, you may want to look for a car that is cheaper to "maintain". Regardless of your decision, you will enjoy driving an Audi, but you may not enjoy the maintenance. Good luck.


Here is my post in response to a related topic:

I am afraid that Audi has TSBs on every one of the problems that I experienced indicating that I am not alone with these issues. As far as not hearing about these issues on the forum, I point out that I am one of the few original C6 owners on the forum with the corresponding 6 years of experience in owning one of these cars. I doubt that when these cars are purchased used that the original owners are so honest with the buyers. In contrast to my 6 years of experience, many of the C6 owners on this forum have less than a year’s experience with the "maintenance" on these cars. With that said, I think that the C6 is a great driving car and is a lot of fun on the highway. I would also buy it all over again. You just need to make sure that you are carrying some type of warranty coverage.


06-02-2011, 08:45 AM
Thanks for the info. Sounds kind of scary to me, but a lot of them seem like annoyances and not major equipment failures which is a plus I think. I will be calling the dealership where it has been sold and serviced at and see what the history has been on it.

06-02-2011, 10:25 AM
I've had my 2006 A6 3.2 S Line Quattro for almost two years now.

I've only had one issue, and it was a dirty throttle body sensor. Which My Local Auth. Audi Dealer cleaned for Free and replaced my Fuel pressue sensor under a recall.

I bought it with 90,000 Miles and It's now got 149,000 Miles.

I'm having some issues now, but it's because I hit a deer and the shop didn't fix it perfectly. (Paint doesn't have pearl in it) Also My Driver
Headlight turned purple and then went out, But it's something the Dealer replaced so it's going to be replaced.

I'm sur getting them new you'll have problems, Like any car but I got mine a lil later in life after everythings been taken care of so I'm loving my car.
Though I want to sell it for a 4.2 or a new a6. But who doesn't want to upgrade. lol

EDIT: Saw the fuel question... I wouldn't. Let's put it this way, When I fuel up, Not Only do I Only use Premium (93) but I Only use SHELL Gas. I guess I'm picky.

If I HAD to put 87 in my car, I'd try to make sure the station also sold E85 and put just a lil of that in. You can do the caculations and get 93 Octane.
Right off the top of my head I forgot what e85 is, I think 105 octane. And a Gallon in a full tank wouldn't hurt it, (It's 4% ethonal when regular 20 gallons is mixed with one gallon of e85) But I don't know it would bring the avg to 93 from 87. I'm at work and have no desire do the math. lol Sorry.

06-02-2011, 11:10 PM
Thanks. I asked the fuel question due to the fear of getting gas in some small town on a trip that only sells regular unleaded. I don't think it would kill the car, but I just want to make sure. One weird thing is on the Edmunds website in the specs it says regular unleaded but premium for the 4.2 which is strange.

06-03-2011, 03:34 AM
The 4.2 does require premium.

06-03-2011, 04:33 PM
As Does the 3.2

06-14-2011, 07:11 PM
Wow, my '05 3.2 quattro has been fine. Owned for 3.5 yrs and went from 35k miles to almost 70k miles now. Only issue was a temp sensor going bad. Everyone says to go WOT every now and then to clean up the carbon. :) Also, the car should run on regular (I've never tried it personally) but I would stick with premium when possible. Gas is expensive as it is, premium OR regular.

06-15-2011, 05:06 AM
Don't let anyone try to scare you out of buying it. I was in your shoes this time last year buying an 05 same model. I bought it with 60k and now it has 79k. It runs great. I've had a backup sensor go bad, thats it. Its a great car and you will be happy with it.