Audi A4 owners have reported 34 problems related to service brakes (under the service brakes category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Audi A4 based on all problems reported for the A4.
On April 25, 2019 I was driving on a city street and the Audi pre sense unexpectedly activated quite violently for about 2 seconds and then turned off. While it did not stop the car completely it did reduce my speed significantly. At the time I was the only car on the road; that is, there were no other cars within sight of mine. There was no damage that I can see to the car but I trust you can understand that this could have been a much worse situation if someone had been following closely behind me. I also trust you understand that this unexpected braking is unacceptable. The Audi service advisor told me he has seen this phenomenon before but Audi has no explanation or solution to the problem.
Involved in a three car rear-end accident. I was the very front car (car 1, white 2018 Audi A4) which was completely stopped that took the least force of the impact. Car 2 (tesla medel s) was also stopped but took brunt of force from at fault car 3 (Dodge SUV) who came barreling in. My car took minor damage to the rear yet my 2018 Audi A4�s collision protocols disabled my car and left it completely undriveable. The seat belts also pulled back and locked up leaving me unable to rebuckle my seat belt after the accident. This meant I was stuck in the middle of a busy highway unable to move to the shoulder with no protection besides the shell of the vehicle. After the fire department arrived 15 minutes later, they had to spend considerable time reading through the manual to figure out how to manually disable my brakes and took 4 firefighters (1 steering and 3 pushing) to push my car to the shoulder. Meanwhile, the at fault driver (car 3) was able to drive away from the scene of the accident after completing police activities. The collision protocol of automatically tightening seat belts, putting on hazard lights, dialing road-side service, rolling down windows partially, and braking itself was great. However, disabling the car and leaving the seat belts unusable afterwards left me in a dangerous situation that could have been even a worse second accident. A flatbed tow truck was called in by Audi roadside service and of course they recommended an Audi certified collision center.
See all problems of the 2018 Audi A4 .
When vehicle has been driven in wet weather and parked in the garage at 70 to 80 degrees f with the parking brake on for an extended period of time, the parking brake intermittently locks up requiring a dangerous amount of throttle to break it loose.
See all problems of the 2017 Audi A4 .
After having this vehicle for 18 months the car began to freeze while backing uo. There are no objects, cars or humans anywhere around the vehicle when this occurs. The car was moving at a very low speed when all of a sudden the auto locks up and the brakes engage, you have to step on the brake in order to release the vehicle. This occurs while backing out of a parking space, my garage where there is nothing near the vehicle. I have taken the car to Audi 3 times and each time they tell me there is nothing wrong with the vehicle. I have also contacted Audi USA numerous times and was again told there is nothing wrong with the vehicle . I contacted Audi's executive offices as well.
When I back out from my garage the vehicle fails to move forward when the shifter is moved from reverse to drive. I have to apply an excessive amount of pressure to the accelerator to get the car to move forward. When the front wheels engage, the excessive force from increasing the power causes the vehicle to launch forward many times almost uncontrollable with the front tires squealing. It appears the front brakes are engaged and suddenly disengages and then suddenly launches forward. There has been no assistance from the dealership to assist with the problem. This issue almost always happens after the vehicle has setting overnight in my garage and backing down a slight slope tonto the public street. . This has been an ongoing problem for the past 3 plus years of ownership.
See all problems of the 2013 Audi A4 .
I was driving on the highway in rainy conditions. (driving according to speed limit) and I suddenly lost control. The car wouldn't turn when I turned the wheel and started veering out of the lane. It then turned into the opposite direction into traffic and eventually spun to a stop.
Buildup of rust on pad wearing surface. Complained about lack of brake performance since lease start.
See all problems of the 2014 Audi A4 .
On numerous occasions the automatic brake system engages the brakes with no warning. This dangerous and possibly deadly situation has been reported to the manufacturer and many authorized dealers.
See all problems of the 2004 Audi A4 .
When I got the car in may. After a week, we went with friends out. When I braked the car began to move into the passenger front seat to the advance and inclines up to a maximum front of the dashboard. So in case of a car accident, he would have been dead. Audi dealer they did not believe me and thought I was misinformed. And it was not hard braking, but normal braking (slowing down). Because many times it happened to me out of the car started to brake without a reason to brake, when I tried to go around bikers at the safe distance, or when parking (until today). When I made the complaint in the Audi dealer, before, they told me that this is not possible, and laughed in June.
I have a 2005. 5 Audi A4 2. 0t quattro which has encountered a failure of the abs/esp electrical module. The result is failure of the esp system and the abs system. This is the result of a faulty electrical module which many forums describe as a frequent occurrence and as a result a redesign by the manufacturer. The Audi part is ~$1900. Based on the experience of many owners and the safety implications I would expect the manufacturer to cover the costs of correcting the defect.
See all problems of the 2005 Audi A4 .
The brakes spontaneously engaged with no warning.
See all problems of the 2006 Audi A4 .
As I approached a stop sign on the morning of Tuesday, February 18th I went to use the brakes and the pedal was extremely hard. It wouldn't press down at all. I ended up running through the stop sign and coasting in to a parking lot where I turned the car off and on a number of times and engaged the emergency brake. The brake was still hard every time. I called Audi experiences and by the time I had explained what happened the brakes began to work again. (for 15 minutes the brakes did not work!) I continued to drive the car that day but at a cautious speed. Later that evening, around 8:50pm, I was driving home and again, the brakes refused to work, same hard pedal as earlier that morning. I called Audi experiences and scheduled a tow pick up. Audi services says that a vacuum hose has been damaged and causes the hose to collapse on itself causing the brakes to "lock up. " they want to repair the same hose and use it again. It definitely needs replaced with a thicker hose that isn't going to collapse on itself and cause this to happen again. I believe this is a faulty hose and needs to be looked into. I have found a number of other people who have had the same issue happen to them. Luckily I was not hurt and didn't hurt someone else.
See all problems of the 2008 Audi A4 .
The brakes spontaneously engage with no warning.
The anti lock brake control modulator unit failed, and now I have brakes that do not work. At the slightest pedal pressure, all 4 wheels will have a strong pulsating, giving you about 1/3 of the braking pressure that is needed. Volkswagens used a nearly identical part, and their abs controller is under recall, I do not understand why NHTSA, cannot force Audi of America to do the same. Thank you.
See all problems of the 1998 Audi A4 .
1. When the abs is activated during snow or ice conditions. 2. The brakes "stick" and the abs is not fully deactivated once your foot is off the brake pedal. Often the rear driver side brake is still engaged slightly during driving. When stopped you can smell the rubbing brakes and you can tell the brake is rubbing while driving as it slows down the vehicle. It usually unsticks after several miles of driving or leaving the car sit overnight not running. 3. I've taken the vehicle to the dealer several times over the years, but they tell me that there is nothing wrong with the brakes or abs system.
See all problems of the 2000 Audi A4 .
I was driving my Audi A4 2004 down a slight slope and had to stop at the red light just before crossing a major highway (va 123). As I saw the red light, I tried to press on the breaks and around the same time, I realized that the car started shaking as if it was about to stall. However, the car did not stall and the break was rock hard. I couldn't apply the breaks. I lowered the gear and used the hand break to stop the car. I had the car towed to the Audi dealer. Dealer told me that the suction pump valve split into two and that is why the engine suddenly got too much air and the break power assist also failed. They have replaced the suction pump. The old part has been trashed.
2001 Audi A4 2. 8 abs brake system controller failure.
See all problems of the 2001 Audi A4 .
Abs electrical module that has failed and is apparently a huge problem, it affects the braking system.
Abs kicks in during low speed braking for no abs-related reason.
See all problems of the 1999 Audi A4 .
The contact owns a 1999 Audi A4. The vehicle was repaired according to NHTSA campaign id number 99v131001 (service brakes, hydraulic:power assist:vacuum:hoses, lines/piping, and fittings). After the repair, the contact noticed that insufficient vacuum is provided to the brake booster in cold weather conditions. In addition, he noticed that the abs and brake warning indicators were illuminated on the instrument panel. The dealer stated that he was only entitled to one repair according to the recall law. The manufacturer did not assist. The failure mileage was 110,000 and current mileage was 113,000.
Been a not so proud owner of a Audi A4 2004 , and having a number of documents issues with my call and receiving poor service from my local dealer. At approximately 3000 miles before my warranty expired the front brakes starts to make grinding nose after taking to the dealer the dealer informed me that the brakes needed to be replaced including the routers (which by the way they never replaced under the maintenance despite the fact I requested them to check my brakes every time I took the car for service and they kept telling my the brakes were good). At this time they informed me that I had to pay $320. 00 to have my brakes replaced. What I don't understand is my did the dealer waited for the router to the full damaged before replacing them.
Premature abs (antilock braking system) module failure.
1998 manual Audi A4. The temperature was 32 degrees f or below. The conditions were steady snow and wet/icy/slush roads. I experienced complete break failure when exiting the highway to a rest area. I pumped the breaks and regained some breaking power to finally slow the vehicle. I completely missed the proper exiting lane due to lack of breaking. No injuries or damage resulted. This is not the first incident of loss of breaking power.
While driving in suburban traffic, I noticed the brake pedal fully dress when I attempted to slow from about 30 mph. Upon subsequent stops, there was a metal on metal sound. Upon inspection, the right front outer pad had completely detached from backing plate. The car was inspected by Audi only 3k miles earlier and there was no indication of brake pad wear. Neither the dealer nor Audi would acknowledge or accept responsibility.
Complaint received via e-mail. " the abs module malfunctions when the brake pedal is depressed at 30 mph and slower, the pedal begins to thump and kick back at my foot. The noise is so loud that it can be heard over the stereo. Even the rear passengers can hear the noise. I feel as though my stopping distance is extended by this. This is not only annoying but also dangerous in inclement weather conditions. The manufacture has not answer for what causing this. The dealership has done all they could with the equipment supplied by the manufacture. They replaced the module, but don't know if that will fix the problem. Module was not replaced.
The brake squeals 90% of the time being applied, it happened since a few months ago. Brought to a local dealer a few times for the problem and reported with "cannot replicate the problem" and "noise is normal for some brakes", while the problem is actually getting worse and now the brake is making the squealing noise even after releasing the brake and last for one or two seconds - it happened especially after the foot brake was applied for more than 15 seconds and then been released (e. G. After waiting at a red light).
1998 Audi A4 1. 8 liter quattro. Experiencing reduced braking capability when brakes are wet. This is the exact complaint being investigated in NHTSA action number pe00016. The brakes work fine when dry, but effectiveness is greatly reduced when wet, and stopping distance increases significantly, causing a safety concern.
When the brake was applied, the vehicle experienced extended stopping distance.
I have had many close calls in rainy weather when trying to stop in my 1998 Audi A4 1. 8t quattro. In dry weather braking is fine. This is a serious problem that needs to be addressed. I am more than certain I would have hit someone if I would not keep a greater distance knowing the horrible braking performance in wet weather.
Consumer stated that when braking and without warning they will have bad brake performance during rainy weather causing the vehicle to have extend stopping distance. Dealer notified. Ts.
In searching for complaints filed for 2001 Audi A4's I noticed a number related to very poor braking in wet weather. I experienced the same problem with my 2001 A4. Audi does have a solution for this problem. The rotor backing plates must be replaced with a different design. When I brought it into the dealer for routine service and mentioned the problem no one in the dealership was familiar with the problem. A factory rep. Was visiting the dealership at the time and was familiar with the problem. He ordered new backing plates which, I am told, can only be ordered by a factory rep. It took 3 months for the parts to reach the dealership. I haven't had the problem since the new backing plates were installed.
2002 Audi A4 customer states that failed brakes caused an accident*
the consumer stated that the brakes collapsed upon him trying to apply them. The manufacturer stated the collision must have occurred first, and in the course of the collision, the bracket in which the brake pedal was mounted collapsed, as it was designed to do. (lawyer wrote in on behalf of consumer).
See all problems of the 2002 Audi A4 .
Terrible wet braking performance, the first 1 or 2 pedal applications in the rain cause no slowing down. The pedal needs to be pumped to dry the rotor. I went through several brake pad compounds with no improvement. Of all the Audis that I owned, the A4 brakes are the worst. Hell, these brakes are the worst of all the cars that I owned!.
2006 Audi A4 customer states that the brakes are squeaking very loud and customer wants Audi to fix.
|Problem Category||Number of Problems|
|Brake Electric Antilock problems||
|Brake Antilock Control Unit/module problems||
|Service Brakes problems||
|Brake Light On problems||
|Brake Disc problems||
|Brake Disc Pads problems||
|Brake Abs Warning Light problems||
|Brakes Failed problems||
|Brake Foundation Components problems||
|Power Assist Brake Vacuum problems||