The contact owns a 2001 Audi A6. The contact stated that a valve that allows air in the crankcase freezes. This causes a build-up and prevents oil from escaping due to the frozen valve. The failure occurs in cold weather conditions. The contact is in the process of taking the vehicle to the dealer for repair. The failure and current mileages were 65,000.

- Mount Vernan, OH, USA

Consumer has had valve cover replaced 3 times on the 2001 A-6. the right side camshaft tensioner seals were replaced. The valve cover gasket was replaced. The PCV hose assembly broke and had to be replaced. The consumer request reimbursement due to the inadequate service received. The battery in the vehicle died twice.

- Glassboro, NJ, USA

Audi's 2.8L V6 engine, from the late 1990's forward to current V6 engines has this problem. The cam adjusters commonly leak oil, and these leaks drip oil onto the exhaust manifold, which presents a fire hazard.

- Alstead, NH, USA

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. Thus, it is unacceptable for Audi usa to say this is "normal" and "inherent in the operation of turbochargers" as this is what they have told me before while the car was being serviced. Although I do understand that turbochargers create what is deemed as "turbo lag" on acceleration, I experience major delays in any acceleration immediately after I have depressed the brake (at any speed) and then try to reaccelerate. This is a serious issue and needs to be fixed or remedied immediately. Please see the posting at audiworld (the largest online forum for Audi owners). Here is the post url: forums.audiworld.com/A6/msgs/304185.phtml.

- Tempe, AZ, USA

My car has been in the shop for repairs every 3000 miles. Some for major problems such as replacing the steering assembly and other times for multiple repairs of the same problems (engine malfunction light on).

- Houston, TX, USA

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. Audi has learned nothing from their past problems- they are the most arrogant business I have ever experienced.

- San Diego, CA, USA