2021 Audi Q5 transmission problems

Filed Nov 5, 2026 · Electrical, Transmission · NJ

The instrument cluster on my 2021 Audi Q5 failed completely — the display went black, with no speedometer or warning indicators. The failure occurred immediately after a car wash, and the vehicle then lost all electrical power. I had the vehicle towed to Audi Meadowlands on 10/26/26. On 10/29/26, the dealership replaced the battery and performed diagnostics ($972.78, RO# 76004260/1). The dealership diagnosed the failed instrument cluster and quoted $4,000-$4,500 to replace it, but did not repair it. The dealership then released the vehicle to me with the instrument cluster inoperative, after assuring me the vehicle was fine to drive. I drove the vehicle on public roads with no speedometer, no gauges, and no warning displays. Within 48 hours, after approximately two miles of driving, the vehicle lost all power again and would not operate. On 11/5/2026, the vehicle would not start. A first tow truck could not jump-start it; a second tow truck succeeded, and when I drove the vehicle out, reverse was not working properly. The vehicle was taken directly to Audi Englewood for independent diagnosis and is not safe to drive. I believe this involves two existing safety recalls. Safety Recall 90VC (the federal safety agency Recall 25V201) addresses failure of this vehicle's virtual cockpit instrument cluster, where warnings, tell-tales, and gauges that do not display could increase the risk of a crash. Safety Recall 90S9 (the federal safety agency Recall 21V947) addresses water penetrating the gateway control module on 2021 Q5 vehicles and causing it to shut down. My cluster failed immediately after a car wash and the vehicle then lost all power. The dealership has provided no documentation that the gateway control module was inspected, that any inspection for water intrusion was performed despite my numerous written requests. My concern is twofold: the defect itselfand the fact that an authorized Audi dealership knowingly released a vehicle with an inoperative instrument cluster into service on public roads.

Filed Sep 24, 2026 · Transmission · MS

We took our 2021 Audi Q5 to the Audi dealership because our vehicle seemed to be skipping gears and making jerking motions while driving. I believe it began happening at least a couple of months ago when my wife noticed a change in driving dynamics. She is the vehicle's sole driver. After taking it to the Audi dealership and driving with the technician in the passenger seat, a diagnosis was made immediately while backing from the parking space. The technician indicated there was no need to go any further because he could determine it needed a differential fluid change. He also indicated it was a common problem with this model Q5 and it is occurring at a high rate with these vehicles. This was a $512.38 (with a 25% discount) expense that should not have occurred for a vehicle this age which was purchased new from this manufacturer. This should not be happening with this vehicle and shouldn't a recall have been made for such a frequently occurring problem? Please investigate and reply

Filed Aug 28, 2026 · Transmission · CA

VIN number: [XXX]. Audi Q5 Prestige 2021 Mileage 48,540 I have contacted Audi Corporate regarding a catastrophic Transmission Failure while driving. The dealership investigation discovered that bolts had loosened and the fluid was not getting to the transmission and it stopped dead while I was driving. I was on surface streets going to pick up my baby granddaughter from daycare. I heard what sounded like a "slip" in the gears, a yellow notification appeared stating that the car is safe to drive. A few minutes later it happened again and the same warning appeared. I continued to the daycare and in the driveway the car stopped dead with a Red warning that it is a transmission malfunction. I luckily was not in a busy intersection or the freeway as that would have been catastrophic for my life and the life of my young granddaughter. I have contacted Audi via telephone at [XXX]. They took my statement and gave me a case number: XXX. I have worked with my Audi dealership and they are giving a "goodwill" discount that requires me to pay $800 for the defective bolt replacement. I purchased the vehicle as a certified pre-owned from the Audi dealership on [XXX]. I purchased an extended warranty they refused to cover the repair as it was a manufacturing issue. I have taken the vehicle in for all maintenance. This transmission failure is nothing that I did and not the result of neglect. This failure of the bolts is a manufacturing error. The bolts are supposed to stay bolted. I want Audi to pay in full for the repair, to include replacement of the entire transmission, in addition to replacing the defective volts. I also want a letter stating that this is a permanent fix and will not happen again. I trusted the Audi name and reputation to build a safe vehicle. The abrupt stop of the transmission could have been the death of me and my young granddaughter had it happened on the freeway or a busy intersection. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 20, 2026 · Electrical, Transmission · TX

On 8/3/26, my 2021 Audi Q5 began throwing numerous different malfunction/error alerts and the engine turned off while driving after a bottle of water had partially spilled onto our backseat behind the drivers side. The vehicle was towed to a nearby mechanic who determined that liquid damaged the gateway control module located under the backseat of the vehicle, as the gateway control module is placed in a "protective cover" (an unsealed plastic bag) and that bag visibly had liquid inside of it. We had immediately contacted Audi upon learning of this issue and decided not to move forward with any repairs, but to instead pay out of pocket to have it towed 70 miles to Audi/where we originally purchased the vehicle. This "protective cover" the control module was placed inside was completed as a recall service repair on our vehicle in April of 2022 due to a the federal safety agency recall announced in December 2021 regarding safety issues in these control modules failing from liquid spills on the backseat. We contacted Audi, explained that liquid had spilled in our backseat and entered the "protective cover" and damaged the control module. They agreed to inspect our vehicle to determine if the "protective cover" had been insufficiently installed. We paid out of pocket to have it towed to the dealership where it took them 6 days to determine the gateway control module is damaged (we had already explained this to them). Although liquid was found in the "protective cover" of this gateway control module, the dealership claims it was installed sufficiently. Upon looking into this matter further, there are numerous complaints of this exact issue (water entering and damaging the gateway control module from a liquid spill on the backseat, even with the "protective cover") on the federal safety agency website, as well as a previous class action lawsuit settled out of court in regards to this EXACT issue. THE PRIOR RECALL REPAIR DOES NOT FIX THE SAFETY HAZARD AS STATED IN THE OFFICIAL the federal safety agency RECALL REPORT.

Filed Feb 4, 2026 · Electrical, Engine · CA

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.

Filed Dec 9, 2025 · Transmission · TX

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 did not resolve the problem. After repeated failed adaptations and diagnostics, the dealer confirmed that the entire transmission requires replacement, citing internal gear set failure. The dealer documented that: Basic transmission settings and adaptations were attempted at least five times The failure consistently occurs at the same gear position A similar Audi Q5 case required full transmission replacement Audi Technical Assistance Center instructed the dealer to replace the transmission Despite this, Audi of America has refused further assistance due to the vehicle being slightly outside the standard warranty period, even though the mileage is extremely low and the failure is safety-related. This appears to be a defect involving the Audi S-tronic transmission, as similar complaints have been reported by other owners. The sudden loss of propulsion while driving presents a clear safety hazard. Safety Impact Sudden loss of acceleration while driving No throttle response during failure Occurred wit

Filed Sep 22, 2025 · Transmission · KY

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 go through certain steps first. They told me this time that the good news was that they would replace with a new center differential, but the bad news was they were not sure how long it would take to get one in. I waited patiently, and then received a call saying it was fixed, (but they did not replace the part). What I did not know at the time was that a message was left 10 minutes earlier saying the part came in and they would be replacing it. After further questioning, the Audi guy said the new 'fix' heats up the fluid better and allows it to work its way through better. He said he was informed moments after he left the VM (where he said they were going to replace it), that the technician told him, and he took it for a drive, and it was 'fixed.' He then told me what he drives, saying his does it too. He said the technical bulletin says i must drive 250 miles (again) and later when I picked it up he said 500 miles. I pointed out my concerns regarding the safety of driving a malfunctioning differential (loss of traction, poor handling, and the potential for complete failure while driving), as well as uneven tire wear. He emphasized that it's fixed and completely safe, even though they did not replace like I was told they would.

Filed Apr 15, 2025 · Transmission · GA

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.

Filed Nov 25, 2024 · Engine, Transmission · IL

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 always the same but eventually did not return. The Max RPM and temp continued in conjunction with the start stop messages. It was always the same. It would be stopped or Parked with the start/stop engaged. The fan would kick on and increase in severity and the temp gauge always was within normal. I eventually stopped using the start/stop function and it seemed to resolve the issue. The warnings never stayed on so I was not overly concerned since it drove fine and didn't sound rough when the messages and warning weren't active. Then it expelled the oil under the hood and gave zero warning lights. I only figured it out when the oil low warning came on. I thought it was weird because I had just checked the level since I see lots of complaints that Audi burns oil. When I opened the hood, I saw the oil. I know this happened suddenly and was not a leak because I was checking may parking spots. I took it the oil change place and it was cleaned up and replaced. I then took it to have the source of the leak identified but a pressure test revealed nothing. Again, no warning persisted and it drove fine. The next time the oil was expelled, it seized and failed.

Filed Jul 3, 2024 · Transmission · 50,000 miles · MA

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.