Other Fuel System Problems of Audi A4 - part 1

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.

See all problems of the 2017 Audi A4 🔎.

Spark plug for damaged due to oil seeping into it. This could lead to overheating of engine or cylinders getting damaged potentially leading to vehicle malfunction when I drive. Audi inspected the part and recommended to reseal the top of the engine. There was a warning for check engine which led to identifying the problem.

See all problems of the 2015 Audi A4 🔎.

The vehicle displayed a low coolant warning and the coolant reservoir was low. Audi dealer service records dated on or about 02/14/2025 document the concern “client states low coolant warning was on, coolant reservoir is low, diagnose and advise. ” the dealer performed coolant-related work involving the thermostat gasket / coolant hoses or connections to the coolant reservoir, ran the vehicle to operating temperature, and rechecked. The concern is being reported because the coolant loss/refill issue continued or remained unresolved afterward. The exact source of coolant loss is unknown, but it may involve the water pump, thermostat, coolant reservoir, coolant hoses/pipes, pressure loss, internal coolant leak, or coolant loss that evaporates before leaving visible residue. This is a safety concern because coolant loss can lead to overheating, warning messages, limp mode, loss of propulsion, engine damage, steam/smoke, or stall risk while driving. No crash, fire, injury, or fatality occurred. The vehicle/component is available for inspection, and Audi service records, coolant-system communications, photos, and water-pump/coolant-related documents are available.

See all problems of the 2018 Audi A4 🔎.

The fuel filler door/gas door intermittently fails to open, preventing normal access to the fuel filler area. This appears to involve the fuel door latch, release mechanism, lock actuator, body component, electrical control, or related wiring/module issue. This is being reported as a safety concern because inability to open the fuel door can prevent refueling when fuel is low. If the vehicle cannot be refueled, it can create a stranding risk or loss-of-propulsion risk, including in traffic, at night, on a highway, or in an unsafe location. The issue also creates driver distraction and uncertainty because refueling access is not reliable. No crash, fire, injury, or fatality occurred. The vehicle/component is available for inspection, and photos/video, service communications, and repair records are available if requested.

The engine oil level has been gradually dropping and has required monitoring and/or adding oil between normal service intervals. The exact source is unknown. It may involve abnormal oil consumption, an external oil leak, internal engine oil consumption, pcv/oil separator issue, turbo-related oil consumption, gasket/seal issue, or oil loss that is not leaving an obvious visible puddle. This is being reported as a safety concern because low engine oil or abnormal oil loss can lead to low oil pressure, warning messages, engine overheating or damage, smoke, oil contacting hot engine/exhaust components, limp mode, stalling, or loss of propulsion while driving. The issue should be inspected rather than treated as normal maintenance unless a proper diagnosis confirms normal operation. No crash, fire, injury, or fatality occurred. The vehicle/component is available for inspection, and oil-level/refill records, repair records, photos, receipts, and service communications are available if requested.

The short-term mpg / fuel-consumption display gives illogical and inconsistent readings. The display can show a significant drop in short-term fuel economy after the vehicle has been parked, locked, and not running, as if the system is incorrectly factoring parked/off time into the mpg calculation. This suggests a possible fault in the onboard computer, instrument cluster, fuel-consumption calculation, sensor input, software, ecu/module logic, or related electrical system. This is being reported as a safety concern because inaccurate fuel-consumption or range-related information can mislead the driver about fuel usage and remaining range, and it may indicate a broader vehicle electrical/computer/sensor malfunction. The concern is also part of a broader pattern of electrical or driver-information issues, including other intermittent warnings and display-related concerns. No crash, fire, injury, or fatality occurred. The vehicle/component is available for inspection, and photos/video of the display, service communications, issue lists, and related electrical-system records are available if requested.

The fuel level sensor that is built into the gas tank, sensor #2, has failed and I only had 30,354 miles on the car at the time of failure. Audi birmingham, in birmingham, mi, confirmed the failure via a diagnostic test.

Baught this car from a guy add said car runs great has smog, reg ,ac works great (not )my boyfriend before I could say anything gave guy money and I signed the bill of sale I said should test drive it so drove to my mechanic in vista CA and he said a german car OH boy and I said ouch so he said to bring it back by after checking it out so he could look in to it further so got in car that had spiderwebs on the motor my guy don't know much about cars so we went back and car stopped stering locked up ignition locked up car shut down in middle of busy traffic and would not turn over nothing so called my apt manager thought out of gas so he got some gas put it in and it started after 1 and a 1/2 hours got to gas station filled it up and started up and got back was scared because of this car people don't care almost got hit a few times so went back to seller gone so tried to find a number none text on face bk market place said this car has problems almost killed us just stopped and nothing worked went to walmart to get some break fluid and coolent car hot and ac didn't work and something leaking it was break fluid then check engin light on friend came and checked it and the little thing that hook up see what codes for diagnoses or why check engin light on was throwing codes misfire and fuel pump and more don't remember but my guy took pictures of the codes went back Monday cause got car June 6 2024 and the guy sent my guy a message bring it by and I'll look at it the car runs great he said master cylender leaking coolent leaking oil was old how did this car even pass smog with it misfiring and shutting down once in street and at walmart it just shut off now told fuel pump coil wires were cracked two relay switches were broken fixed one and car misfiring hole in the mast cylender and fluid leaking and this seller calls him self a mechanic very sad have put over 100. 00 dollars the guy fixed the ac and gave my guy 40 dollars I paid 55. 00 seller their car at my mechinacs.

See all problems of the 2008 Audi A4 🔎.

The turbo sounds like it's not going in/out of gear, oil going into spark plugs, radiator fluid leaking system getting real hot. Low engine poer picking up speed an issue. Air bag rear brake light malfunction, oil pressure not correct.

See all problems of the 2009 Audi A4 🔎.

Turbo needs to be replaced after only 58,000 miles. This has been an issue causing recalls on Audi models in different years.

Owner of 2019 A4 recently purchased from dealership after lease expired in Feb. 2023. Currently with only 36,800 miles, took vehicle to inspect on Nov. 24th and nothing but a front light replacement and suggestion of new tires in inspection video. The factory warranty due to expire the following week, Dec. 2nd 2023, and I was inquiring as to cost of extending warranty, but di not purchase, was waiting until after holidays. The following weekend, tank malfunction light turns on, from nowhere and displays zero gas on the dashboard. The previous night we filled tank with superior gas from the same gas station we use, nothing odd. . Call dealership next business day, they state the factory warranty expired and cannot cover anything. I call Audi USA and they suggest that Audi dealership service inspect and they do and after inspecting the car conclude that I need a new fuel tank! a brand new car needs a gas tank! service advisor states I have a faulty tank and it is because of ibad gas? what is bad gas? I mean really? I put the same gas as always, superior. I received no warning lights. The dealership's inspection from the previous week did not detect anything either. It is a safety concern to drive not knowing how much gas one has. I suspect the gas gauge has an issue. The sensor is in the fuel tank hence the suggestion to replace the whole tank at a cost of $3880! the dealership should assume responsibility for not detecting during inspection. Even though factory warranty expired within a week of incident, they should provide a grace period. Audi USA must investigate. I am regretting my Audi purchase!!! this sensor is faulty and is dangerous and I am not the only owner who has this problem occur. It is unacceptable that this car not perform as expected and gas tanks usually have a 20 year life span! I believe that 46,000 cars were recalled with gas gauge issues and although this car is not in that recall does not mean it can be defective.

See all problems of the 2019 Audi A4 🔎.

On December 29, 2022 as I was driving my engine light came on, the fuel gauge registered empty (I had over a quarter tank of fuel at the time), and my miles till empty display in the upper left of the instrument cluster went blank. I took my Audi to my Audi dealer and their recommended repair was as follows: fuel tank: after removing fuel pump and level sensor we found that the secondary fuel level sensor is built into the fuel tank is faulty. Recommend replacing the tank and fuel pump with the tank. Their reason was that if the fuel tank failed it could cause a potentially hazardous situation for the driver and passengers.

Driving on a two lane busy road, car started to jerk and shut down. Lost steering capability immediately, car veered toward ditch, stopped. Called 911 immediately because the road was busy and cars could not safely get around my stalled vehicle. I told 911 that I was exiting the vehicle for my safety. I could not restart the vehicle. There were no warning lamps or messages or symptoms alerting me to a problem until after the occurrence. I had no idea what was happening, and it was frightening. Never had this situation with any of my Audi's and I only have approximately 41,000 miles on it. After about 15 minutes a person stopped and was able to restart my vehicle (911) never got to me and I cautiously drove home. Called the dealer and had it serviced immediately. Diagnostics performed on it. It required a replacement of the fuel pump and fuel rail sensor. It found fuel pump control module to be shorting out. It seems that this type of issue should not be occurring on the vehicle with such low mileage.

See all problems of the 2014 Audi A4 🔎.

I have been an Audi A4 owner for more than 10 years. During that time, I have had 2 incidents where I could have easily been killed as well as injured or killed passengers in oncoming vehicles. The latest was this morning on March 23, 2022. The other was nearly 10 years ago. My personal investigation has led me to a conclusion that I have not yet seen anywhere else. In both cases, I am trying to get into a heavy flow of traffic. I know that I will have to "gun it" to get up to speed. For that reason, I have one foot on the accelerator and one on the brake. When traffic opens to where I think it is safe to proceed, I press the accelerator while my foot is still on the brake. In the situation this morning, I intended to execute a sharp right turn into the closest lane of a road with 2-lanes going in that direction. I pressed the accelerator hard while turning the steering wheel. Instead of turning right, the car shot across both lanes of traffic, wiped out a traffic sign and entered the lanes of oncoming traffic. I had zero control. It was only dumb luck that I avoided traffic in both directions (both of which were travelling at roughly 60 mph). Even though I knew about this risk from my earlier incident, I didn't think about it at the time. I realize that my actions send conflicting signals to the car (go/don't go), but the last thing the car should do is propel itself forward with no control on the part of the driver. I don't know if this is limited to Audi or the A4, but I wanted to make my experience public to possibly avoid a serious or fatal accident by someone else. It is very avoidable with proper knowledge and attention. I'd be interested in knowing if you have been notified of any other incidents of this type.

The coolant light came on after I replaced coil packs and I stopped to look wasn't leaking anywhere. Drove to work and it caught on fire due to overheating I guess not really sure. I was driving a car on fire down a highway and didn't even know it. I stopped to take a left turn into work and smoke stared billowing out and around the entire car. Other drivers couldn't see me or nothing I could have been in an accident. The fire department checked the car out sort of and it's in a mechanics shop now. Trying to figure it out. Oil light was on and that's it. An then the coolant light would kick on and off. Nothing else after I changed the coil packs. And it was well after I did that.

See all problems of the 2003 Audi A4 🔎.

While driving on the highway, there was a message that flashed on the dashboard about the coolant system, within a couple minutes, I felt like the car was shutting down while going 65 miles per hour. So I pulled over on the shoulder of the turnpike southbound in miami. This cased a great safety problem for me, as this happened while I was driving on the highway then I had to be on the right shoulder of the highway and had to call for road ranger. When the road ranger came to inspect the car, he tried to add coolant and realized that there was a fuel leak, the car would not start, the coolant drained completely out of the car. I then had to call aaa to get the car towed.

Having acceleration problems. Varies not consistent. When applying pedal to accelerate. The car doesn't respond. Rpm drops to zero. Engine still runs but no movement. Releasing pedal and trying again works intermittently. Scary when trying to get car out of danger.

See all problems of the 2012 Audi A4 🔎.

On my car when I'm driving anywhere after I put my cruise control on if I press up or down on the cruise control to change the speed the car will either brake or speed up and it won't stop until I hit my brakes hard and turn the cruise control completely off which is also an issue because my brakes are going out extremely fast like I need a new pair every 2-3 months and the car also burns through oil so quickly that I need to add more within 2-3 days after an oil change with no leaks and it's burning more oil than gas which is clogging up my catalytic converter. . . . . . . . And causing my emissions to be bad. . . . .

See all problems of the 2011 Audi A4 🔎.

2021 I brought an Audi A4 quattro 2. 0 2008 after having a test drive and haven't looked over the mechanic just said it was the fuel pressure high pressure sensor that was not a big deal after an hour buying it it took it to see my mom and it quit on me I had to have it towed home it would not start I took it to the mechanic and the mechanic said the same thing that it was a high pressure fuel pressure sensor so I purchased one and put on it couple months later it did the same thing the check engine light came on and it was told it was fuel pressure high pressure sensor again so I changed a fuel sensor two fuel pumps in the engine to electrical fuel pumps in the back four sensors camshaft sensor the cam follower ppc valves body throttle can follower engine light still comes on the car does not want to seem like it wants to accelerate when it gets to the normal temperature save your driving for 10 or 15 minutes still normal temperature not the radio the temperature it will start to cut off the rpm drops very fast I also have put in a fuel pressure regulator and a fuel pressure filter just the other day it came out again saying the same thing p0089 dakota's always been throwing ever since I brought the car and p 02993 it says performance one and performance too I have put a lot of money in to get in this car fixed in the I believe there is something wrong with with the fuel system in the cars they need to be on a recall.

I have gone gone to the dealer numerous times visits right after I had the scheduled oil changes done. The oil light / consumption issue happens after I've gotten an oil change, but 7,000 miles before the next one is due. I get afraid thinking that my car is out of oil . I do not have any oil leaks. Oil is leaking around ladder frame. This has been a know issue for a few years that I have been having and Audi will not resolve.

Brucken motors, I purchased an Audi A4 that was advertised on your facebook as safe, reliable, and dependent. I came to you with a down payment in hand, stating that I needed a car that drove without issues. I can afford minor repairs, but I wanted something with a clean history and service record. Zachary laney, the salesman, claimed that there was nothing wrong with this car. I asked about the headlight and was told, "OH no, it's just a bulb! I will buy it so you can replace it. " asked about any issues and was told the car was absolutely clean. Sure enough, less than a week after I bought it, it started acting up. I took it to the mechanic to remedy the issue, paid out of pocket even though I was sold a warranty (mistake number two on your part) that I was told would cover most issues. My mechanic is experienced and has taken care of many cars, and sure enough, the issue was not fixed. It was only covered up with makeup per say. I gave it another chance and the vehicle broke down again. This vehicle, which mind you, I put a 4000 dollar down payment on, pay a 17!!!! percent interest rate even though I was told 7 and lied to on paper, is costing me over 470 a month for just the payment. Let alone the repairs. I haven't driven the car a month. Literally. I've paid on it for four months, and it's been in the shop. I let you guys know this and was ignored constantly. I was told that the check engine codes were cleared at one point which means that you knew this vehicle was bad. Ontop of it all, this car was stolen and had title issues. There was also minor damage and a long service history.

See all problems of the 2016 Audi A4 🔎.

Purchased car used from Audi of north park in san antonio, TX with approx 73k miles on it. I have driven it for less than 2k miles. The car will no longer engage in reverse. I searched forums and see that this is a common problem.

My car started to smell like gas inside, and it was a very strong odor. I went to an auozone to get a diagnostic, in the system it had said it was a very small gas leak and that it would have been okay to drive. I kept driving and it still smelled like gasoline and stronger each time. Therefore, I took it to the mechanic the next day driving it, and under the back seats was filled with gasoline. The mechanic still cant find the leak. However, if I would have kept driving it, the car could have exploded on me.

See all problems of the 2013 Audi A4 🔎.

Engine coolant and engine light etc came on. The vehicle was on the highway. I have a small child. Based on the Audi message my vehicle could catch on fire. Please send me info to have this problem corrected.

Gas gauge displaying incorrect level of fuel. Oil level notification improperly displaying level of oil.

See all problems of the 2006 Audi A4 🔎.

My vehicle is leaking coolant. Every 8-10k miles it goes below normal level in reservoir . There is a distinct odor of coolant each time I get out of the vehicle. I have had Audi look at it 5 times. They confirm the coolant levels are low and they refill it saying they can't find a leak. I am concern that this is a fire hazard.

My vehicle was burning oil faster than normal. I have since had my car in the shop several times before oil changes were due to top off oil do to several lights coming "min oil", "oil pressure too low".

Gas smell upon starting engine, continuing entire time car is driven. As long as the car was on, still or running, you can smell gas.

This vehicle is needing a quart of oil every 300-400 miles. It's a 6 year old car, there is something seriously wrong with Audi engine design. A quart of oil every 300-400 miles is completely unacceptable. Since day 1 this vehicle has had an oil consumption problem now at 75k miles and the problem just continues to get worse.

I had received a recall June of 2018. It states that my car can essentially start on fire. I went on the Audi website and found out they are servicing the vehicals right now for the after run coolant pump, but hope to in the fall. This being said; do I just have to wait and pray that my car doesn't start on fire or ? that's not safe, and I didn't pay thousands of dollars to hope my car doesn't start on fire till the fall.

I received a recall for my 2015 Audi A4 but there is no remedy currently available to fix it. I am doing a pcs to rota, spain August 28, 2018 and have planned on shipping my car as well. With a current recall on my vehicle, I am unsure the next steps.

Upon having 3 consecutive oil changes, my car suddenly began to burn oil (no leaks) after the first oil change upon driving less than 900 miles. Then the second oil change did the same thing upon driving under 300 miles. It actually ran out of oil totally. I added oil as instructed by the car, and it burn the oil withing 250 miles of driving. I took it to the dealer, who acknowledge that this model and year had the wrong engine put in the vehicle. They would need to replace the entire engine at my cost, with possible reimbursement to me. Not acceptable, since they acknowledged the defect. Oil continues to burn at a very high rate and potential cause additional engine problems while driving.

Engine.

Tamara recall my car wouldnt start keep getting steer wheel hard to drive shifts to gear get stuck.

Oil leaks and electric malfucntions and engine oil leaks. . . Lots of oil leaks even after repairs.

See all problems of the 2007 Audi A4 🔎.