Audi S7 stalling problems

Filed Dec 18, 2024 · Driver assistance, Transmission · FL

The last month I’ve been having issues with the transmission. It’s been cutting out on me, giving me warnings and causing me to stall in the middle of the road, and when I do manage to get it back on it, jerks to the point where I could crash into someone in front of me. I’ve lost power while driving three times already. I also get warnings that my lane assistance is not working and that my forward collision warning is not working. I wasn’t able to get pictures, but I can definitely get pictures next time cause I know it’s gonna happen again. I’m very positive if they did a diagnostics that the diagnostics would let them know when the engine started acting up as today (12/18/24) around 9:30 am, it happened again, on my way to a doctors appointment … but it started on November 28th, was the first time it started happening. This is SO DANGEROUS

Filed Oct 10, 2023 · Electrical, Engine · CA

On 10/9/2023, the starter generator failed causing the vehicle to stop and shut down while driving and completely break down. I was not able to move the vehicle or shift it into park. Stall occurred on a freeway entrance (acceleration lane) in the traffic lane without warning. Approximately 20 minutes before this complete failure of the vehicle, the dashboard warning system provided the following warnings in yellow (meaning the car was drivable): (1) electrical system malfunction! Please contact Service; (2) rear spoiler malfunction; (3) traction control malfunction; and (3) Parking aid malfunction. The vehicle also indicated that the collision avoidance system was not operating and the air conditioning system shut down approximately five minutes before the vehicle completely broke down in the traffic lane. I have received the "rear spoiler malfunction" alert 5+ times in the last year; I asked the dealer to check it; and they said there was no record in the onboard computer of the problem.

Filed Apr 12, 2022 · Transmission · IN

I have a 2016 Audi S7 that uses the notorious 7-speed DSG transmission. I started to notice some random jerking when I pull the car from the red light a month before the car completely dead on me in April 2021. One time when I was driving on the highway at 70mph it throws a "transmission malfunction" code on my dash and put my car in Limp Mode (only 1,3,5,7 gear available). I also experience gear slipping when putting the car in reverse, when putting the car in reverse, 9/10 times the R gear won't engage at all, and the onetime the R gear will only engage when the gas pedal is pressed way down, resulting in the car shooting backward and potentially putting anyone behind the car in danger. One time I almost got rear-ended when the car suddenly stalled at a crossroad when pulling from a red light, because the car decided to shift in neutral instead of 2nd gear. I had to restart the car couple of times to drive it in Limp Mode and created a traffic jam at a very busy crossroad. After I did some extensive search on this issue, I believe the mechatronic unit has design flaws that after some miles (in my case 40000 miles) are bound to fail. And since the manufacturer's warranty only covers the drivetrain for cars that is either 5 years old or within 36000 miles, I have to replace the mechatronic unit out of my pocket, which is a major burden on my financial situation. There weren't any warning lights prior to the failure, and the only symptom is the random jerking when upshift or downshifting but I was told it is normal to the 7 speed DSG gearbox my car was using. I had Audi Tysons Corner did a diagnosis and they respond that a new mechatronic needs to be put in. I have attached the report they send me. They also send me a picture of the leaking fluid in the transmission pan which I attached also. I ended up putting a new Mechatronic Unit in and I was told it is an Upgrade version from a local Audi-authorized dealer I am attaching the invoice here.

Filed Sep 22, 2021 · Engine · WA

While traveling home on the interstate from the airport, my vehicle suddenly started to run very rough and the engine felt like it was going to stall at low idle. I had decreased acceleration capability. No warning lamps illuminated, but it was obvious something was wrong. I limped the car to my local Audi dealership and left it there for an inspection the following morning. I was contacted by a service advisor the next day, who told me one of my turbochargers failed (specifically, he stated the impeller fin had too much play and was rubbing against the walls of the housing) and the other turbocharger would likely fail soon as well. I was shown a video by the technician confirming this was the issue. The service advisor told me there was a technical service bulletin produced by Audi referencing this issue, TSB 2044640/2. That bulletin states "Damage to the turbocharger is rarely directly the result of turbocharger failure." Known causes listed include performance increases by tuned ECM, non-compliance with service intervals, incorrectly fitted oil filter element, poor oil supply of turbocharger, and leaks in intake tract. The vehicle has been serviced regularly and meticulously by the same Audi dealership form which it was originally purchased since it was brand new. It has not had any performance modifications. I feel the factory oil strainer from Audi is deficient and led to the premature failure of the turbocharger and my unsafe experience on the highway. The service advisor stated the turbocharger should have lasted much longer and could not explain why it failed. The replacement cost is approximately $12,000.

Filed Sep 9, 2021 · Engine · 70,500 miles · CA

The contact owns a 2014 Audi S7. The contact stated while driving 40 MPH, the vehicle stalled without warning. The contact pulled over but was unable to restart the vehicle. The vehicle was towed to a local dealer to be diagnosed but was not repaired. The contact stated there was no warning light illuminated. The manufacturer was not informed of the failure. The failure mileage was approximately 70,500.

Filed Apr 22, 2021 · Engine · 73,131 miles · FL

Initially I was driving on the interstate (I-95) and could feel the car running rough or missing. After I exited the interstate and merged onto the highway (sr405) the car stalled at a traffic light. Wouldn't start at first and after several attempts it finally started but was running really rough. Luckily I was only a mile from the house and was able to get off the highway and limp home on some back roads. I had the car towed to audi the next day and they diagnosed the issue to be a failure of the turbos. Repair took 21 days and they had to replace the turbos and the oil screens.

Filed Apr 21, 2021 · Engine · 90,500 miles · CA

Vehicle stalled during highway driving. Failed to restart. Towed to a dealership. Diagnostic showed both turbochargers need replacement due to oil starvation caused by a design flaw.

Filed Apr 3, 2021 · Engine, Transmission · 71,000 miles · WI

Driving on the highway during a road trip from florida to wisconsin, our engine stalled while coming to a stop. We managed to get it to an audi dealer and it was determined both turbochargers were broken. Both shafts had snapped and the car was un-drivable leaving us stranded in georgia. This is a design issue for the 4.0t engines and vw/audi has refused to implement a fix beside the oil screen band-aid. The oil screen, since it is not serviceable, will slowly accumulate debris and restrict oil flow to the turbos and cause them to be starved of oil. Simply removing this oil screen would be a suitable fix but audi has refused to acknowledge their design is faulty. This failure could be extremely dangerous if they were to cause the vehicle to stall at speed or worse, have the engine ignite do to the mental on metal grinding of the turbo turbine. Please help us.

Filed Jul 11, 2019 · Transmission · 59,603 miles · MI

Turbo wheel sheared off the shaft and stalled the car while driving at < 5mph in parking lot. Unable to then start car and move it - needed to be pushed to one side to await the tow truck. There were no symptoms or warnings or cel prior to the failure. Others have reported same failure at higher speeds or even on highways. This failure mode is dangerous and could result in loss of vehicle control. Audi should be performing a recall on this for all the vehicles they install this engine model into. I was only recently made aware of the ability to report this issue here, hence the delay in my doing so.

Filed Jul 9, 2019 · Engine · 82,000 miles · OH

Turbos failed at approximately 82,000 miles due to a clogged oil feed screen. Turbos were starved of oil causing one compressor shaft to break in half and the other to have excessive shaft play. This caused a no-run issue and resulted in both turbos having to be replaced along with the oil screen. The vehicle began running poorly at highway speed and when it came to a stop, stalled at a busy freeway interchange. After multiple attempts, the car was able to start and limp off the road where it was towed from and diagnosed at a mechanic