FUEL/PROPULSION SYSTEM12/05/2025
I have been trying to register my vehicle in California for several months, however, in order to do so, I need the car to pass SMOG. Initially I was told that the issue was related to an emissions sensor and that I had to drive the vehicle a few more miles to get the sensor to register properly. This turned out not to be the case. A short time later, the fuel gauge completely stopped working. I took it to an authorized Audi repair shop that told me the issue was related to a the "Fuel Tank Sending Unit". That part was replaced by the repair shop, however, the issue persisted. The authorized repair shop is now telling me that it the entire tank needs to be replaced in order to fix the issue.. I have searched and this seems to be a common issue among Audi vehicles; the sensor stops working and the gauge stops responding. Audi seems to know that this is an issue. Can this possibly be investigated.
EXTERIOR LIGHTING08/25/2025
The headlights on my 2017 Audi A4 have developed stress cracks in the headlamp housing. According to the inspection performed by an authorized Audi dealer, these cracks will obscure headlight projection and lower the visibility range at night. The dealer specifically noted there were no signs of outside influence or misuse, and the issue is likely due to internal headlight temperature, external ambient temperature, and age. This defect directly impairs visibility and makes it unsafe to drive the vehicle at night or in low-light conditions. Headlights are a critical safety system. The problem has been confirmed and documented by the Audi dealership in a written inspection report. Audi of America has acknowledged that the defect is unrelated to misuse but refuses to fully assist with repairs, despite admitting it impacts visibility. The issue is ongoing and worsens with time. There were no warning lamps or dashboard messages related to the defect prior to its discovery. The vehicle and documentation are available for inspection upon request. This is a safety concern that puts me and others at risk due to reduced nighttime visibility.
UNKNOWN OR OTHER12/20/2024
The Audi "Drive Select" transmission function switches to "Sports Mode" in rain and snow. This makes the vehicle dangerously jumpy in slippery conditions. This has happened to me (I think) three times in the last couple of years, always in rain or snow. My knowledge of the car allowed me to slowly delve into the screen functions to reprogram the transmission while driving in these dangerous conditions, but I don't know if I could always do it again, or if others might find it too confusing in the moment.
ENGINE03/21/2024
I experienced similar undesirable engine behavior on two occasions. Upon coming to a stop, the auto start/stop system stopped the engine. Shortly after, when attempting to drive away, the stop/start system attempted to start the engine, but failed; the starter briefly activated to turn over the engine, but the engine did not start and continue running. The car was left in the following condition: Engine off. Gear indicator showing "D". Accelerator pedal unresponsive. Regaining engine power required turning the car off, applying the brake pedal, turning the car on, and selecting "D" with the gear selector. This behavior occurred on two occasions on different days; once on 16 March 2024 and the first time within several days prior. Both occasions occurred before the engine was at full operating temperature, and while the car was on a slight uphill slope. Ambient temperatures were in the high 40's or 50's Fahrenheit. By luck, neither occasion resulted in an unsafe traffic condition.
POWER TRAIN03/14/2024
Coolant leak from thermostat/ water pump housing.
POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM01/31/2024
Turbo needs to be replaced after only 58,000 miles. This has been an issue causing recalls on Audi models in different years.
STEERING12/27/2023
2017 A4 Audi Allroad- while making turns at low speeds with the steering wheel, the vehicle makes cracking, popping and vibration noises. The noise was inspected and reproduced, confirmed on 1/4/2023 by Audi Fletcher Jones, Costa Mesa, California and advised to replace engine mounts, and both front upper control arms, total repair bill $3240.27. After vehicle repairs the steering noises and vibration returned again with no warning lamps, or messages. The vehicle was dropped off at Audi Fletcher Jones, Costa Mesa, CA on 11/28/2023. Audi Fletcher Jones now states it is due to possible defective steering rack and quoted $4,237.9 for repairs on 12/27/2023. Possible safety risk to myself and others if there is an Audi Manufacture defect within the steering rack which can cause loss of steering. Steering rack failure should not be occurring on a vehicle with mileage - only 46,742 miles. NHSTA please investigate Audi of America for possible manufacture defects of engine mounts, control arms, and steering racks. My vehicle is available for inspection upon request.
ENGINE09/25/2023
2017 A4 B9 premium plus model, AWD, 2.0T. I have had an Audi dealership service my car for all major service intervals outside of oil change, not only at recommended intervals but even early. 3 years ago I had my 40K mile service done at 35K miles. Spark plugs were replaced by Audi Hawthorne in Westchester county, NY. One week ago, at 49K miles (well before the 6 years or 60K miles Audi says their spark plugs will last) my engine seized while driving and was misfiring. This caused an engine shut down WHILE THE CAR WAS IN MOTION on the highway. I was able to restart and make it off the highway where the car seized again. I had to then be towed 30 miles back home. Took it to my locally well known body shop that I have used for years for them to say: 1. My spark plugs were loose and installed incorrectly and 2. The electrode at the top of the plug had broken off TWO SEPERATE SPARK PLUGS and fallen into the engine, causing scoring to the engine and #4 piston as well as blow-by during combustion. They said this had to be caused by a manufacturing defect PLUS incorrect install. they fixed what they could and recommended I take it to Audi. Audi is now saying I need a whole new engine because of damage to piston 4, and not saying they will cover the replacement cost of $21,500.
ENGINE05/12/2023
Start Stop system failures. Upon engine restarting, it stalls instead. This has happened on multiple occasions and the dealer response is to just turn it off every time you start the car. Causes dangerous situations due to inability to move car until full power cycle happens.
UNKNOWN OR OTHER05/06/2023
I was driving on the freeway at night. There was a sudden explosion that sounded like a gunshot. I was shocked and afraid. I heard the rain outside, so it seemed like there was a hole in the car. I pulled off the freeway and went to a well lit gas station to inspect the car. The sunroof had exploded upward. Fortunately the fabric sunshade was closed so the shards of glass remained above it. There was no hole in the fabric so nothing had fallen through the glass. There is no trajectory of a rock kicked up by another vehicle that could have exploded a roof outward. I did not go under an overpass from which something could have fallen. There was no rock or meteor in my car—as mentioned, the underlying sunshade was not pierced by a falling object. This occurred suddenly and without warning. Consumers are clearly complaining about this problem but nothing is being done. I will talk to my insurance company and Audi tomorrow as this happened late on a Friday night. Audi should not only eat the cost of this repair but these manufacturers should be forced to fix this problem. It is a horrible sudden sound, shards of glass could have hit me driving if the fabric had been open, and anyone in the back seat could have been injured or blinded by shattered glass. This problem has been a problem for years. Shame on everyone for allowing this to continue.
ENGINE04/18/2023
The Thermostat and it's house is failing on my of the 2017 audi a4 causing the coolant water to leak which makes the car heat up quickly due to leak and not having sufficient coolant water. So many of the b9 generation of audi a4 owners are also complain about this issue. Audi is charging $2500 to fix this known issue.
ENGINE02/17/2023
Random Engine Coolant Warning. Since purchase of vehicle mid-March 2022, I have randomly received engine coolant warnings on the dashboard. Visual checks of the coolant reservoir reveal no issues. Internet search of issue reveals a number of other owners have had the same problem. Issue has occurred at all speeds and temperature conditions.
Showing 12 of 81 complaints.
