Came into the garage in the morning and realized there was oil on the ground. The next day took the car to the shop to have them looked at to see where the oil leak is coming from. After diagnosis the result was that rear main seal needs to be replaced with the PCV valve. Total price is about $1500. I did not have any check engine light and this seems like it is a known issue with Audi vehicles where the PCV valve is over pressuring the engine and causing gaskets/seals the blow. I believe this should be the responsibility of the Audi to fix this problems since this is a known issue and has been reported a lot of 2.0T engines.

- Milwaukee, WI, USA

Vehicle began to run very rough / started to shake. Vehicle was then parked / turned off and couldn't restart. The vehicle was towed to the Audi dealership where they diagnosed the problem as a faulty chain tensioner. May I add here that I'm being told by the service people that updated chain tensioners are being recommended on newer vehicles. Just prior to the warranty expiration the care was serviced for the oil consumption issue.

- Coldwater, MI, USA

I have obtained this car as a used car. Engine oil was changed one week after I have the car at a mechanic shop. Three weeks (about 500miles driving) later, a low engine oil alarm sounded. I brought the car back to the same mechanic shop and add a quart of oil to the engine. A couple weeks later, I was driving the car to a road trip. The low oil alarm sounded again. This was in the middle of my road trip when I was driving in the highway (about 500miles since last oil addition) at about 75mph. I have to get off the high way right away and went to a local mechanic shop to top off the oil. I was told by a mechanic that this is dangerous because if I couldn?T find a mechanic shop in time to add more engine oil, the engine would have been overheated, locked, and forced to stop right away. Under this scenario, a serious collision with the cars behind or next to me might be caused if driving on the highway. Upon research, it was discovered that this abnormal amount of engine oil consumption has been a common problem/complaint in this model of car due to the defects in the piston rings. In most cases, the piston rings were replaced under the manufacturer warranty. My car is just out of warranty with 57K miles on it. The dealer should be responsible fixing this problem as it is a serious safety problem and it was defected from the manufacturer.

- Brooklyn, NY, USA

This Audi was a lemon from the start and botched repairs at the dealer have only made it worse. One the 2nd day we owned the car the oil light came on and we had to return it to the dealer for more oil. Over the next 2 years the car burned an excessive amount of oil starting at 1 qrt every 2500 miles and deteriorating to 1 qrt every 800 miles. All along the dealer told us this was "normal". in May 2011, dealer told us that Audi had initiated a testing program and if the car failed they would do something. In June 2011, the car failed test and the dealer kept the car for 3+ weeks conducting major engine surgery. 6000 miles later we took the car in for routine maintenance and they said they wanted to do routine warranty work. In the course of this work, they destroyed the timing chain and pistons of the car. 1 week later the transmission failed. In talking to Audi technicians at other dealers (off the record) they say that the oil problem is a design problem and that the fixes are simply bandaids. Appears that the 2012 model has been redesigned to fix the engine flaw. The net effect is that the car has visited the Audi dealer on at least a monthly basis since we bought it and has spend more than 8 weeks in major "warranty related" engine repairs. To top it off, Audi has complimented this "worst in class" product experience with a "worst in class" customer service experience as Audi America 1-800 people have been consistently either robotic or rude in talking with us about this issue. Most recently, they made a lame offer to reimburse us for towing expenses and extend the warranty on this dubious car for another 12 months. Amazingly, they refuse to pu T the offer in writing until after acceptance. Presumably so that they can avoid legal issues. Please help. I am sure I'm not the only one suffering this.

- Cincinnati, OH, USA

I was driving my new 2009 Audi A4 which had less than 3500 miles on it at the time when first the transmission changes began to be very abrupt. I thought nothing of it at first and traffic on the westside highway in New York city was fairly congested so the speeds were not that high. Suddenly, the transmission stops shifting all together and all the lights car's dashboard turn on before the engine simply shuts off I roll to a halt in the center lane of the westside highway and use the battery to turn on my hazard lights. I repeatedly tried to restart the engine and it would start for about a second before the whole car began to vibrate heavily before the engine would shut down. The police were called and they escorted the tow-truck off the highway. The car was locked in the tow-truck depot until the next morning when it was given to the Audi service department where they ran tests and determined that the fuel pump had broken. They replaced the pump and the car was returned to me a few days later.

- New York, NY, USA