Catastrophic engine damage caused by failure of timing chain tensioner. No early warning as vehicle was serviced the day before by Audi dealership and oil capacity and pressure were within manufacturer's tolerance. Vehicle was in motion at slow speed when check engine light came on.

- Brookfield, CT, USA

Timing chain tensioner failure. The failure caused the timing chain to jump, throwing the pistons out of sync, causing damage to the valves. This occurred when first starting the vehicle.

- Hanover, MD, USA

Excessive oil consumption engine problem

- Augusta, GA, USA

Engine misfire likely due to timing chain jump. Extensive repair to engine including intake valves, timing chain, tensioner, and several related parts. At the time of the malfunction, the vehicle was being driven in albany, NY, during heavy traffic. The malfunction could have resulted in personal injury to occupants in this vehicle as well as to other vehicles. Cost of the repair was $3,194.46, and resulted in loss of the vehicle for 9 days.

- Saratoga Springs, NY, USA

High oil consumption from faulty pistons and piston rings leading to catastrophic engine failure. Broke exhaust valve at highway speed while on interstate. Audi aware of defects but denies responsibility. They refused multiple reasonable requests for help in repairs.

- Graham, NC, USA

I was lucky that my car did not fail while driving down the highway like other owners with this problem have. The timing tensioner and chain failed, causing a costly repair. I understand that there are three class-action suits against Audi-VW regarding this problem, yet no recall. Why? I want Audi to pay for this costly repair and have a recall. I can send photos if necessary.

- Evanston, IL, USA

Oil consumption issue resulting in constantly topping-off oil, purchasing oil by the cases. Audi of America clearly states that the Audi dealership is required to fulfill the repair obligation, since my vehicle is within the 80K mileage/8 year time frame, Audi is liable to make the relative repairs. However, the Audi of tysons dealership seems to believe otherwise and refuses to assume the responsibility of repairs. The dealership completed part one of the testing and requested that I return once the oil light illuminated. After returning to the dealership, the resistance began. After providing consistent service records of oil changes that exclude the "odometer readings", the Audi dealership did not go to the next phase of testing/repair. As a result, the vehicle has stalled on the beltway(risky). Assuming responsibility of a repair now would definitely alleviate a costly price to pay should an accident occur related to this problem. Someone needs to take immediate recall action now or pay a major price later! not the way to value a consumer and a poor way of handling the matter!!!

- Washington, DC, USA

The timing chain tensioner broke causing the engine to completely stop which made the car unable to move or respond in any way. At the time the vehicle was stationary but completely disabled.

- Timonium, MD, USA

Purchased a used lease vehicle in 2014, 63,000 miles on it. Looked like a creampuff. Carfax was clean. Used oil excessively. Was told by local dealer I could not get car fixed per class action settlement because I was not original owner or did not have all service records. Car has now had an intake valve failure in cylinder 3 while driving on highway at normal speed. Possibly caused by defective piston rings breaking. 101,000 miles and just out of extended warranty I purchased for $2500 extra. Car is not drivable and stuck 3 hours from my home. Audi of America says car was "fixed" in 2012 and will not release maintenance records, citing privacy of previous owner, a corporate lease. Audi dealer in melbourne fl who did the repair in 2012 will not release records so I do not know what was fixed and what parts were used. Total runaround by Audi of America and Audi of melbourne. I don't have $7000 for repair, and, still make payments on car for 2 more years. A car I can't drive, for work. All 5 million vehicles from 2009, 2010 and 2011 with defective pistons and rings need to be recalled and fixed. Excessive oil consumption also compromises catalytic converter performance, and life. That's another $1200-$1700 to get replaced. Audi care is a joke. Their arrogance is astounding.

- Graham, NC, USA

Add oil warning light on. The car tells me to add 1 quarts oil every 200-300 miles. Car has a known excessive oil consumption issue because Audi made bad batch of piston rings on engine code cae and they refuse to admit it. Class action lawsuit was filed against them and was settled in Sept 2014 and now its time for a recall on this issue.

- Elk Grove, CA, USA

I have an 2010 Audi A4. The vehicle stalled on the highway while driving at 60 mph. The oil light went from yellow to red and the car. I had just put oil in the vehicle before leaving that morning, and the vehicle is not leaking oil. I have complained to the dealer and manufacturer about the oil consumption problem which is a well known problem with the 2008-2012 A4 and A5 models, but the claim it is not a safety issue and have refused to fix the problem.

- Maple Grove, MN, USA

I bought car used from an Audi dealer, and months later the car rattled and the whole car was shaking when I turned it on in the morning. I turned it off and on again, this stopped the problem. I thought it was probably the weather of around 53 degrees F. months later it did it again two more times but this time the weather was not cold and I drove an hour earlier. In January of this year, I drove 40 miles and when pulling into my driveway the car turned off on its own. I could not possibly turned it off due to both of my hands were on the steering wheel as I was turning into my driveway. Thanks god I was driving slow because my kids were outside. I checked the key and it was still pushed down. My husband that was also outside noticed what happened, he told me to take the car to the dealer. I had already taken this vehicle for making noise when turning. I took the car to the dealer for the car turning off. Once the dealer was done troubleshooting they say that there's nothing wrong with the car. They could not duplicate the problem. I still have this problem of the engine sometimes shaking the whole car when turning on. And as for my steering I still have the problem, I paid for new tires, alignment, and for tire balance. I really don't have time to keep taking the car to the dealer for them to say that they could not duplicate the problem.

- Ventura, CA, USA

The contact owns a 2010 Audi A4. The contact stated while driving 30 mph, the add 1 quart of oil light illuminated. The contact added a quart of oil to the vehicle but 1,000 miles later, the light illuminated again. The vehicle was taken to the dealer for inspection and they stated that the engine had the wrong pistons and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 27,000. The VIN was unavailable.

- Red Hook , NY, USA

Audi cars consume oil like crazy but my A4 takes one quart every 200 miles and I commute everyday to different city's for work and to school. Come to find out that I have the old Audi engine, and you must get the new one to not have this problem. Should be under warranty from the dealer if not im getting rid of the car.

- Saratoga Springs, NY, USA

The oil was changed at 70,000 miles. The oil light came on twice after less than 2,000 miles. I added oil the first time, and it's on again after less than a week. I checked a few forums on line and other owners have experienced the same thing. The car is not leaking oil, so I'm figuring the engine must be burning oil. A few mechanics I've spoken to have said that some Audi A4's have been recalled for this problem.

- Peekskill, NY, USA

Bought the car used from a dealership that inspected the car for any defects. While test driving the car, I had to return the car to the dealership for repairs. The cars fuel pump was failing and causing excessive misfires. Then about two months after driving the car, it began to use oil excessively. I checked for any leaks and found none. I contacted the dealership and was informed that anything less than 1qt per 1000 miles was considered normal under Audi standards. Personally I don't agree! now approximately 20000 miles later and 8 months, it burns a qt of oil every 300 miles. I know this is excessive as I can now see and smell oil from the exhaust. I contacted Audi for a resolution since there are numerous complaints about the excessive oil but as expected, since I did not buy the vehicle from an authorized reseller, it couldn't be covered. If the engineers at Audi know some of the cars produced with the 2.0 turbo engine were assembled with pistons and rings that were too small, why hasn't a mass recall been issued to resolve the issue? I would like this issue to be resolved before something more catastrophic occurs.

- Battle Creek, MI, USA

Car brought in for misfire condition that resulted in power reduction/hesitation while driving. Dealer detected faulty injector. Replaced injector and engine was still malfunctioning. Dealer then removed cylinder and observed piston ringland damage. Vehicle was starting to exhibit excessive oil consumption problems. Either faulty injector or piston ring defect is suspected to cause damage. Looking into remedies through arbitration or other means as Audi is aware about (I.e. undersized rings / pistons). I will retain all suspect parts as Audi will not honor under warranty terms and independent shop will be performing repairs, and can be made available for further investigation. Excessive oil consumption is a known issue with Audi usa. The manual states that normal consumption is up to 1 quart for every 1000 miles. Per Audi's recommendations, you will burn 10 quarts of oil before you need an oil change. That engine holds 5 quarts when not leaking it through rings, reducing anti-knock rating of fuel during combustion. I believe this a significant safety hazard as engine seizing could unexpectedly occur due to defective components. I believe a class action lawsuit is inevitable.

- Troy, MI, USA