hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
50,951 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2000 Audi A6 engine problems

engine problem

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2000 Audi A6 Owner Comments

problem #7

Jun 302010

A6 8-cyl

  • 140,000 miles


2000 Audi A6 4.2L V8 quattro engine cooling system failure. The plastic coolant pipe between the oil cooler housing and the engine block fails causing potential catastrophic coolant loss, overheated engine and potential fire. The plastic pipe hardens/crumbles with age, approximately 10 years and 135K miles. I replaced the pipe...it takes about 10 manhours. The replacement Audi part is maybe $20 but it is still plastic. I replaced it with a billet aluminum part with double O-rings. Dealer wanted $2900 to repair!! I understand this part is on every 4.2L V8 on both A6 and A8 cars from 1998 to current 2010.

- Silver Spring, MD, USA

problem #6

Apr 012006

A6 4WD 6-cyl

  • Automatic transmission
  • 50,000 miles
I own an Audi A6, 2000. The car has been in the shop for over 18 months and 2 1/2 years for a re-accruing check engine light. For over 50,000 miles the car has been serviced by Audi and Audi only. Recently the car went out of warranty, however the check engine light is still not resolved and both flow and Audi have washed there hands of it. In-addition, I just recently lost my 4 and 5 gear and only after I took the car to a different dealer we found that flow Audi has been doing bad work on the car such as gluing parts back together (yes, gluing parts on a $55,000 car) and installing vacuum hoses up to the wrong parts. In-addition, they stripped out bolts and left them in place without fixing them, these bolts hold the engine together and in-place. (ask me about my timing belt issue, to long of a story to write on a web-page). The bottom line is Audi and flow Audi refuse to warranty the car any further, however the check engine light is still not fixed and its showing new codes. I have much more information... also, ask me about my A4 (better story) flow and Audi have cost me over $8,000 in the last two months and I have called everyone from the top of flow to the top of Audi. There is no customer service and no response. My new mechanic is will to talk as well... there are no lemon laws and there is no one to help the buyer. It seems like no-one will talk to me since im not buying a new car. I really need help and advice.

- Greensboro, NC, USA

problem #5

Mar 172003

A6 4WD 6-cyl

  • Automatic transmission
  • 33,204 miles
2000 Audi A6 chronic "service engine" light illumination; oil leaks & valve gaskets repeatedly replaced (within 30 days); brake issues/front end vibration; engine rough when initially started.

- Santa Monica, CA, USA

problem #4

Jul 012003

A6 8-cyl

  • Automatic transmission
  • 40,000 miles


The vehicles check engine light illuminated. The dealer refused to service the vehicle unless the consumer paid out of pocket, although the vehicle was taken to the dealer for service 3 days prior. The consumer paid for the check engine light service, in addition to the defective thermostat, which caused the vehicle to overheat one month after the warranty expired. Subsequently, three days after that service, the check engine light illuminated again.

- La Canada, CA, USA

problem #3

Jun 122003


  • miles
Engine check light is on. Dealer has inspected vehicle five times and could not duplicate or correct the problem.

- Warren, MI, USA

problem #2

Apr 172003

(reported on)

A6 6-cyl

  • 27,000 miles
There were oil leaks, the consumer had to replace the turbo(s) at 37000 miles and needed a new turbo(s) again, and the engine and brake lights appeared on different occasions. Dealer stated the oil wasn't changed regularly. The initial turbo(s) were replaced with the old oil because the new oil wasn't covered under warranty. The service dealer stated that 1 out of 15 vehicle's have the same problem. Mr scc

- Unknown, DC, USA

problem #1

Jan 062003

A6 6-cyl

  • Manual transmission
  • 66,450 miles
Cylinder heads (V-6, 2.7 liter, 5-valve) are leaking oil from the ends in an area which is plugged with a "ball seal" pressed in place during mfg. Oil drips onto exhaust causing causing moderate to severe smell of burning oil inside and around vehicle. Dealer mechanics were able to locate problem by inserting special dye in the oil and checking with a blacklight, and state heads need to be replaced. Dealer denies defect and suggests this as a normal wear item, but there are no moving parts. I am worried about complete failure of the seals resulting in oil/oil pressure loss, extensive engine damage and/or fire.

- Burbank, IL, USA

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