Audi A4 sudden acceleration problems

Filed Dec 3, 2025 · Acceleration, Brakes · FL · crash

As I was pulling into a parking spot, traveling at a low speed I naturally applied the brakes but the car accelerated instead jumping a concrete curb and hitting a wall. In that moment I realized I had no control of the vehicle. This sudden unintended acceleration was accompanied by a loss of braking. Pressing on the brakes harder did not stop or slow the car. Brake and accelerator failed. The vehicle is available for inspection. Thankfully the car hit a wall, and there was no injury to myself or others. The parking spot is positioned in front of a concrete wall. The problem has not been confirmed by the dealer as of yet. No warning lamps, message or other signs of malfunction were evident.

Filed Nov 16, 2021 · Acceleration, Suspension · 1,347 miles · CA · crash · 1 injury

The contact leased a 2021 Audi A4. The contact stated that the dealer had provided her with the vehicle rental while her vehicle was being repaired. The contact stated that while driving at 4 MPH and turning into a parking pace on the 4th floor of a parking garage, the vehicle inadvertently accelerated on its own at 100 MPH. The contact depressed the brake pedal several times but it failed to respond. The vehicle crashed into the fence of steel and broke a portion of the wall. The air bags deployed. There were no warning lights illuminated. The contact sustained two concussions and a heart attack. The contact sought medical assistance the next day and had been seeking medical assistance. A police report was filed. The vehicle was towed to the dealer and it was totaled. The manufacturer was notified of the failure. The approximate failure mileage was 1,347.

Filed Jul 3, 2018 · Transmission · 64,000 miles · CA

On 7/2/18 I merged on to 280 s from moorpark avenue in san jose. I had driven about a mile @ 60 (I do not use cruise control) when engine started to accelerate unexpectedly. I stepped on brake which slowed my vehicle but when I removed foot from brake it started to accelerate again. I was able to exit freeway safely and pull over into an empty parking lot. When I turned off engine I believe I hear a loud "roar" noise. Experience was frightening. I was afraid I would lose control of vehicle and cause major injury. I checked floor mat and floor to see if there was obstruction but there was none. I called tow company but after waiting 3 hours for c&m towing to not show up I decided to driver car around parking lot to see how it would drive. It drove fine so I drove home on surface streets. The next day took 2008 audi a4 with 64k miles in to our mechanic. Diagnostics did not show any error codes.I do not know what caused sudden acceleration. Still I need to report this for the public record,in the event this happens again to me or others and it does not end well. Linda

Filed Oct 13, 2014 · Engine, Steering · 130,000 miles · WA

Stopped on a hill at a stop light, went to go and car lunged forward and died. Had to immediately apply brakes, car started again. Has happened multiple times. We are second owner, have only had the car for a year and found that the transmission control module for this vehicle was already replaced at 49,000 miles - under warranty to other owner. Now, at 130k miles we are being told it has to be replaced again. It is a danger to drive as they said the transmission could fail or even the gears could slip causing danger to the passengers. This particular model of audi transmission, known as "multitronic" or "CVT" has numerous complaints and failures. We paid 12k for this car used and have a major malfunction within a year.

Filed Mar 20, 2014 · Acceleration · 50,000 miles · CT

While driving through a parking lot, my 2004 audi a4 1.8 cabriolet suddenly accelerated for no apparent reason. I was able to shut it down and checked to make sure the floor mat was not interfering with the gas pedal. I restarted the car and drove to my next location without incident. However, after leaving my next location and pulling out onto the main road the car started accelerating again and was difficult to control. The more I applied the brake, the more the engine raced. Afraid of causing an accident in rush hour traffic, I was able to pull into a parking lot and turn off the car. This also happened to me about a year ago, but I assumed it was the car mat because it never happened again until february of this year. After being made aware of the toyota problem, I decided to research a bit and have discovered mine is not an isolated audi problem. I'm honestly afraid to drive the car out of concern this may happen again.

Filed Feb 6, 2014 · Acceleration · 60,500 miles · TX

I experienced unintended acceleration of my car when I started accelerating after the light turned green. I had no indication as to what was causing the car to accelerate. After putting the car in neutral, slamming on the breaks and using the emergency break the car finally stopped after going about a quarter of a mile. Once I got the car to stop, I kept the car turned on and called 911 who dispatched the fire department. I got out of my car because I was scared and didn't know what else to do.. I didn't know if it was ok to turn the car off. Because the accelerator was floored by the car mat the car automatically locked. The fireman had to break the window to get into the car and the fireman found the car mat lodged under the accelerator and had to rip it out from under the pedal. I had never had any indication prior to this incident that my car mat could move and get lodged. Per the fireman, this happens a lot with these types of car mats. I didn't get further explanation from him, but after talking to many people and scouring the internet I found that numerous other people have had the accelerator get stuck because of the car mat in their audi's. In some cases it was the audi dealership telling them the cause was the car mat. Audi refuses to recognize any flaw with the design and refused to reimburse me for my expenses associated with the incident. Luckily this occurred on a sunday around 11:30am so there were very few cars on the road. Toyota recalled their cars with mats that slipped, why should audi not have to fix this problem?

Filed Feb 5, 2013 · Acceleration · 28,950 miles · IL

During an attempt to accelerate the gas pedal was pushed to the floor (audi a4 '10) and remained stuck to the floor even after the foot was removed. The car has a manual transmission and was shifted into neutral at this time. The tachometer indicated the engine was redlining in neutral while the foot was still off the accelerator pedal. This engine speed lasted for approximately 5 seconds then the accelerator appeared to become unstuck and car operation returned to normal. An aftermarket floor mat was in place at the time of the incident. However, the mat was "zip tied" back to the driver's seat mount so it would not shift forward and possibly interfere in clutch, brake or accelerator operation. After this incident, the same day, the driver checked to make sure the floor mat was properly placed and still zip tied and it was. The floor mat was zip tied to begin with because there was one other episode of unintended acceleration approximately 1 year ago that the driver though may have been due to slippage of the floor mat. Obviously this initial event a year ago could have been due to causes other than the floor mat.

Filed May 31, 2012 · Acceleration · 69,224 miles · VA

Tl* the contact owns a 2005 audi a4. While driving approximately 35 MPH, the driver depressed the accelerator pedal and noticed that the accelerator pedal had become stuck. The vehicle suddenly accelerated to 100 MPH erroneously. The contact continued depressing the brake pedal and was able to stop the vehicle. The vehicle was not taken to the dealer for diagnostic testing or possible repairs. The driver inspected the vehicle and noticed that the floor mat retention system failed and caused the floor mat to become lodged under the accelerator pedal, causing the failure. The approximate failure mileage was 69,224.

Filed Apr 10, 2012 · Acceleration · 72,000 miles · TN

Tl* the contact owns a 2007 audi a4. The contact was driving 70 MPH when the accelerator pedal was released and the vehicle accelerated without warning. The contact also stated that every warning light illuminated intermittently during the failure. The vehicle was not taken to the dealer. The manufacturer was not notified. The vehicle was not repaired and the VIN was unknown. The failure mileage was 72,000 and the current mileage was 81,000.

Filed Jan 28, 2012 · Electrical, Engine · 145,000 miles · PA

The car is experiencing unintended acceleration, usually, but not always, after heavy acceleration. Over 10 occurrences. Cannot remedy by pulling back the accelerator. Car must be turned off and the engine must record 0 RPM to remedy the problem.