I am writing to report a persistent issue with my 2021 Audi A4, VIN [XXX] . I have been experiencing a noticeable vibration, humming, and shuddering sensation that occurs specifically when turning at slow speeds (e.g., in a parking lot or when making a tight turn at an intersection). This issue has been diagnosed at a dealership, and the diagnostic report from the service invoice dated 07/12/2025 noted "VIBRATION HUMMING SHUDDER WHILE TURNING." The vehicle's mileage at the time was 38,888 miles. Dealership diagnosed this issue as a failing AWD clutch system. I took the car to a different repair shop, and they redirected me to the Audi Technical Service Bulletin (TSB). The symptoms described in the TSB—"vibrations, humming, droning, or rubbing can be heard and/or felt in the vehicle interior... when the steering wheel is turned to full lock"—perfectly matches my experience. TSB Link - [XXX] The vehicle details are: Model: Audi A4 Year: 2021 VIN: [XXX] Current Mileage: 39490 Since this is an issue due to a sub-optimal part shipped by Audi, many other Audi owners are also facing similar issues. Therefore, I want to report this issue to the federal safety agency and take action on cars sold by Audi. This issue divert driver attention and is a potential cause of accident while taking the turn as driver may get distracted. I already got my car serviced at Audi dealership but they didn't inform me about this issue while the car was under warranty. Now the car is out of warranty after Apr-2025, I'm facing this issue significantly and dealership is charging close to $5000 to fix the issue. Please let me know what information you require from me to proceed. I would like Audi to place a recall on the car models facing this issue and implement the fix for all owners facing the issue because of faulty part shipped by Audi of America. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Audi A4 shudder problems
10 of the 2,899 owner complaints about the Audi A4 describe shudder or vibration when accelerating, most of them for the 2009 model year.
- owner complaints
- 10
- worst model year
- 2009
- typical repair cost reported
- $5,000
- typical mileage
- 65,000
By model year
- 20211
- 20111
- 20094
- 20081
- 20052
- 20021
Often reported together
Transmission failure 1Slipping 1Loss of power 1Jerking 1Headlights 1Fuel leak 1Knocking 1CVT failure 1
What owners say
Vehicle has 73,000 miles and the transmission has severe juddering. Transmission jerks continually while driving at all speeds, and makes it unsafe to drive. Apparently a common problem with audi's. Fix is $6000.00, making car worthless.
We are the 2nd owner of an audi a4 convertible, purchased in november of 2010 with 25k miles. Within two years, we began to have problems with the CVT transmission and had to have the TCM replaced, which was later reimbursed by audi as a result of a class-action lawsuit. In january of 2014, at 38k miles, audi diagnosed the transmission as defective and needing replacement, transmission slipping when cold, vehicle shuddering. On complaint to audi, they agreed to cover 50% of the costs, which would be approximately $7,000 which resulted in my wife being afraid to drive the vehicle in cold weather. Replace the transmission at half cost. At 47k miles, again cold weather, the problem has worsened, vehicle often won't reverse and transmission locks up unexpectedly. As the vehicle cannot be driven safely, my wife will not drive it until it is safe again. As there is documented evidence of known issues with this transmission (us district court # cv11-00665 bro agrx), audi should be held responsible for 100% of the costs to repair and CVT transmission which results in a vehicle being unsafe to operate.
My car has a leaking high pressure fuel leak from the high pressure hose right at the top of the engine block at the rear of the engine. The steel line connects directly to the filter and is leaking from the stainless steal line. The power steering metal hose lines are incorrect from the factory and do not supply enough pressure in the line to keep the steering wheel from a very harsh low speed shudder when turning. The lower control arm bushings fail at very low mileage. None of these issues have been acknowledged on this year car. This model audi is an absolute lemon having multiple issues and extreme repairs and huge costs when trying to fix them. I have the paper work for these fixes and what it takes to repair them correctly. I have already had this car repaired from audi for the piston ring oil failure which they had to replace per the lawsuit they were hit with and still denied any wrong doing. Please force this company to right these issues they ignored in the face of profits instead of doing right by the consumer.
When I am backing up, when I turn the steering wheel. The steering wheel and the rest of the column shudder, vibrate and makes a rumbling noise.
Every time I pull out of a parking spot, when I turn the steering wheel (not giving any gas), the steering wheel and the rest of the column shudder, vibrate and make a rumbling noise
When coming to a complete stop, the car shudders while going into 2nd and 1st gear as if someone has just rear ended the car. Took the audi to an authorized dealer in my area and findings are that it is the mechatronic that is defective. Finding is that is a very common problem and audi is not taking any action after contacting aoa. Repair cost is $2700.
Since I purchased my 2005 audi a4 2.0l at my local audi/porsche dealership, I have had recurring issues with my headlights. It started with shuddering and flickering while idled, and now the problem is so bad that my left light will actually shudder, flicker, and go completely out. I have to manually switch my lights off and back on (very dangerous at night) to get them back on, only to eventually shudder and go out yet again. I've taken it to the audi dealer multiple times and they couldn't duplicate the issue and when I brought it to them with the headlight completely out, of course it was out of warranty so they want to charge me an arm and a leg (over $1000) to fix just one headlight even though this is a known issue that you can google "audi a4 dipped headlight" and get thousands of forums full of complaints. The dealership wants to go through everything they can to nickel and dime with new bulbs that don't fix this huge safety problem. The real problem is the ballasts and igniter. I should not have to pay outrageous amounts of money for an issue that's an obvious issue across the board with this model of audi. I'm now afraid to drive at night, especially in rural areas with little lighting because my headlights are so undependable. This is not ok, and audi continually refuses to address this issue.
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.
Nar 02/28/2003 mr the vehicle suddenly begins to shudder and rapidly lose power, making it unable to merge safely or drive at interstate highway speeds.
Related recalls
No recalls on record for this model year.
Questions about the Audi A4 shudder
Which Audi A4 years have shudder or vibration when accelerating problems?
The model years with the most reports are 2009 (4 complaints), 2005 (2 complaints) and 2002 (1 complaints).
How much does it cost to fix shudder or vibration when accelerating on the Audi A4?
Owners who mentioned a price put the repair at about $5,000 (median of 5 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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