Audi A4 knocking problems

Filed Feb 18, 2020 · Engine · 92,290 miles · CA

I was driving my car from work on a city street I heard that it was knocking and had stopped the car to check on it but was not sure since I am figuring this car out. After that day it had been knocking. A few days later it had starting to shake while I was driving and all this happened on a city street. But anyways when I accelerated to a certain number, the shaking stopped but was still knocking. And after time it just got worse and was unsafe to drive.

Filed Dec 7, 2018 · Engine · 150,000 miles · NY

Tl* the contact owns a 2002 audi a4. The contact heard a ticking noise coming from the timing belt. Audi brooklyn (665 65th st, brooklyn, ny 11220, (833) 448-2449) was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was 150,000. The VIN was unknown.

Filed Jan 18, 2017 · Airbags · GA

Takata recall - been awaiting "parts" since 5/27/2016. It is now 1/18/2017. Recall states "inflator could rupture ... After long-term exposure to absolute high humidity and temperature cycling". My vehicle will be 12 years old in 3 months and I live in "hotlanta" ga ("high humidity" is the norm here). I've "avoid(ed) use of the front passenger seat" for 8 months now. Our family has grown and now this is not possible any longer. Spoke to audi USA today (I call them regularly) and they state they still have no idea on parts availability as "the federal safety agency is determining the priority of repairs". How my vehicle is not a priority is beyond my comprehension. Eight months on a waiting list for a remedy is beyond my comprehension. I had to buy a larger car to fit my growing family and it is now beyond my moral capability to sell this defective vehicle "which may result in serious injury or death to vehicle occupants" and be able to sleep at night. Audi is a big corporation, takata is a big corporation and the federal safety agency is a big government entity but, I know human beings must still work at both places and somebody, somewhere has apparently decided my life and the lives of my family are somehow not a priority. Eight months without a definitive fix date on a car that's got to be a ticking time bomb at 12 years old in the humid south (yet winters with temps below freezing aka "temperature cycling")... Fix it or require audi to buy it back a-la vw diesel fiasco.

Filed Mar 19, 2014 · Engine · 152,000 miles · RI

I am writing regarding a sad story about my 2002 audi a4 quattro 3.0 sedan . While I realize that the car is not new, and with 152,000 miles on the road; I am still disappointed with the series of events that has happened to me, not once, but twice now! About a week ago, as I turned the engine on, I heard a loud knocking like something had been hit and fallen apart in the engine. At the same time, the check engine light came on (flashing). I took it to my trusted mechanic. At this point, I am thinking that the issue was with a coil ? But not really since they have been replaced and not that long ago, might I add! While the car was being inspected, the mechanic heard a noise coming from camshaft adjusters. Once they opened the case, they found screws lose that had literally fallen off and broken. The camshaft adjustment housing was also damaged, amongst other parts (I have pictures). How can this be possible? After all, the bolts are encased, and it is not like anyone messed with them. The sad part is that the same had happened on the other side a year ago.

Filed Jan 31, 2013 · Engine, Fuel system · 43,014 miles · MI

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.

Filed Sep 10, 2011 · Electrical, Lights · 70,000 miles · OH

On multiple occasions over the last two years the left and right headlights go out and a "dipped headlight" warning light shows up on the dash. Turning the headlights off then back on will bring them back on momentarily until a vibration knocks them out again. It's usually one side or the other but sometimes both lights go out at the same time. No fault codes are stored when this happens.

Filed Mar 10, 2011 · Lights · 35,000 miles · OR

2006 audi a4 avant 3.2l v6: on multiple occasions over the last three years the left and right headlights go out and a "dipped headlight" warning light shows up on the dash. Turning the headlights off then back on will bring them back on momentarily until a vibration knocks them out again. It's usually one side or the other but sometimes both lights go out at the same time. This is a safety issue and is a very common one: http://www.audizine.com/forum/showthread.php/332613-class-action-lawsuit-dipped-headlight-flicker-problem.

Filed Sep 6, 2010 · Steering · NY

I have two 2009 a4 have a shudder sound at low speeds while turning wheel 5 or 10 MPH also when parking a knocking sound when turning wheel. Please help! Dealer said thats normal.

Filed Jun 2, 2007 · Fuel system · 30,000 miles · AE

Knocking noise under rear passenger seat behind driver. After changing out fuel gauging mechanisms and fuel pump the dealer has been told (by audi USA) that the cause is probably a filter element in fuel tank area which clogs and does not let the tank return air to tank after being compressed when fuel is sent to engine? The vehicle has been in the shop off and on for the last 2 months. Although dealer/audi are trying to fix the vehicle this should not happen in a 35k plus automobile. I am only lucky that I still have some warranty time left (vehicle is not yet two years old with about 35k miles! Had it not been for the warranty remaining this would have been very labor intensive thus very expensive.

Filed Mar 13, 2006 · Engine · 69,900 miles · PA

My 2002 audi a4 just hit 69,900 miles & the 3rd turbo on my car has just gone bad & has now developed a ticking noise in the valve-train. Fiore audi in altoona, pa looked at the car & said they never heard a noise in the top of the motor & that the "dentist drill" turbo noise was caused by an exhaust leak. I verbalized my concerns over oil sludge issues with this car & they pulled the valve-cover & oil pan & found oil sludge build-up in the oil lines feeding the turbo & in some of the oil galleys in the engine. Audi of america agreed to replace the turbo and the oil feed lines under audi's extended oil sludge warranty. After the engine was put back together, fiore finally heard the "ticking" noise in the top of the motor. After pulling the head they determined that the engine block and the cylinder head were warped. Fiore technicians informed me that these damages were caused by the engine being excessively overheated. The car had never indicated that it had overheated, yet for this "excuse/reason", they refused to cover any repairs regardless of the fact that I had produced receipts documenting that the oil was changed religiously around 3,000 mile intervals (well below audi's initial recommendation that the oil be changed every 10,000 miles, as referenced in the manual, or their subsequent recommendation of changing it every 5,000 miles) with an audi recommended full synthetic oil as per the sludge warranty policy. The oil lines that feed the turbo charger were never checked or replaced during any of the turbo charger replacements, or other oil smoke complaints, until now. After our 3rd turbo replacement, obviously due to oil sludge build-up, I'm now told my motor is no good. Had audi taken care of this issue when these problems were first developed & identified, it wouldn't need a new engine at less than 70k miles due to an issue that is well-known with this vehicle & that was also obviously present when this vehicles warranty was in full effect.