2021 AUDI Q5 Power Train Problems

Control module located under rear seat became slightly wet from spilled liquid, and failed. Engine and electrical failure as a result of control module failure. Audi refuses to cover damages as warranty period is over. Vehicle design is defective.

While driving my 2021 Audi Q5, the vehicle experienced a sudden transmission disengagement without warning. The vehicle behaved as if it had shifted into neutral while in motion. When this occurred, pressing the accelerator produced no response — the engine would not rev and the vehicle would not accelerate. This created a serious safety risk as it occurred during normal driving conditions and could have resulted in a collision. After stopping the vehicle and shifting into Park and then back into Drive, the transmission temporarily re-engaged. The issue reoccurred multiple times. Prior to one of the failures, the vehicle hesitated and bucked when starting from a stop. A warning message later appeared stating: “Transmission malfunction. You may continue to drive but will be unable to reverse.” The vehicle was taken to an authorized Audi dealership. Audi of America approved replacement of the transmission control module (mechatronic unit); however, this repair...

My car always did a weird shuddering thing when taking turns a certain way. I just thought it was part of how the new vehicle worked. I thought it was strange when I took my car in to repair a front tire, and was told / showed that the back two tire treads were worn down. The new car only had 20,249 miles. But I read somewhere that some new car dealers use lower tread tires to save money, so I did not pursue anything. Then, when someone pointed out that the 'weird shuddering' was not normal, I took it into Audi to have them look at it. Audi did a repair, and said I had to drive it 600 miles to know if it would be resolved. After the 600 miles, the problem continued. I took back, and they said they know what it is but they have to...

When turning at low speed the vehicle bucks and jitters affecting steering and control of the vehicle. Audi issued a technical service bulletin to address this issue so it's clearly a widespread problem.

The engine has failed and I am not sure why my Q5 was not included in the recall for coolant issues leading to engine failure. My issue started last winter when the car would suddenly kick in a loud fan. It would flash a warning that the start/stop malfunctioned as it only happened when stopped and/or parked. It was extremely alarming to hear so I would turn the car off and let it sit. When I started it up, there were no warnings and would drive normally. This continued to happen randomly. Then came the coolant low warning, engine temp, along with an RPM warning that kicked on the loud fan. I added coolant as it was the reservoir was low but never empty and temp gauge was in normal range . All messages would go away, car would drive normally. The coolant message happened a couple more times and...

The contact owns a 2021 Audi Q5. The contact stated while driving approximately 5 MPH and coming to a stop or making a turn, the vehicle shuddered. In addition, the contact stated that the vehicle shuddered at slower speeds. There was no warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed and determined that the 4-WD clutch and rear differential needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was made aware of the failure, but no assistance was provided. The failure mileage was approximately 50,000.

While driving on the road, multiple warning and error messages suddenly appeared on dashboard. Entire car shut down in very short time left no time for driver to safely pull over. The car cannot move in the middle of the road and put the driver, passengers and surrounding vehicles at risk. The car was towed to a dealer and they confirmed the gate way module under rear seat is wet and shorted.

The contact owns a 2021 Audi Q5. The contact stated that while she was driving 65-70 MPH, the warning message "Transmission Engine Failure" appeared on the instrument panel. The vehicle inadvertently stalled while attempting to veer to the side of the road. The contact stated she was able to restart the vehicle after several attempts however, the vehicle was towed to her residence. The dealer was notified of the failure and advised the contact to take the vehicle to their location for diagnostic testing. The vehicle was taken to the dealer who diagnosed that the ECM chip had failed and needed to be replaced. The vehicle was repaired. The contact also stated while she was reversing, the vehicle inadvertently stalled. There were no warning lights illuminated. The vehicle was taken to the dealer who diagnosed that the clutch had failed. The vehicle was repaired. The manufacturer was not notified of...

I leased a 2021 Audi Q5 (VIN: WA1BAAFY7M2[XXX]) in November 2020. 2021 Audi Q5 has gateway module underneath the middle row seat. The gateway module is like the brain of the car and if it stops working the car stops - basically the car is brain dead. In my case, I was driving the car with my family i.e. wife, 7 and 3 year old kids when the car abruptly shut off. Luckily, I was on a road with 45 MPH speed limit and no traffic, so nothing happened to us. If this happened on a highway or other situation anything could have happened to me and my family. After safely parking the car and getting it towed to Audi Westmont, the car was inspected, and I was informed about the gateway module issue. To my shock, the mechanic said that it’s a design flaw that Audi is aware of...

Q5 HAS A VERY SERIOUS DEFECT, THAT IS, THERE IS A GATEWAY MODULE LOCATED UNDER THE REAR SEAT CUSHION/CUP HOLDER. ALL OF THE COMMUNICATIONS TO ALL THE CONTROLLERS GO THROUGH THIS LITTLE BOX. IF WATER SPILLS, IT COLLECTS AROUND THE GATEWAY AND CORRODES IT, WHICH WILL SHUT DOWN THE CAR. THIS SHUTDOWN OCCURRED WHILE I WAS DRIVING MY FAMILY. LOST ALL POWER, ENGINE, ELECTRICAL, EVERYTHING. BARELY COASTED OUT OF THE ROADWAY. THIS IS A DESIGN FLAW TO LOCATE THIS SENSITIVE MODULE UNDERNEATH REAR CUP HOLDERS AND WILL LEAD TO DANGEROUS SITUATIONS FOR PEOPLE IN THE CAR.