Nappa

Update - So Audi have had the car since yesterday morning, by 11am yesterday the master technician rang to say to "no fault found" but would continue to investigate. This morning there response has been the issue is caused by driver error and they can't get it to fault on a test drive. I explained that the fault has happened 6/7 time in 4.5k miles so by driving it around the block I doubt you will experience the issue. The master technician went on to say that I hadn't bought an automatic car (S-tronic) because it hasn't got a torque converter so the car is free to roll back. So basically he wants me to engage the handbrake every time the car stop/starts and with this stupid predictive stop can be 3 or 4 times every 20 yards in traffic. So i'm at a round about just about to pull out, stop/start kicks in and the advice is to engage the handbrake before I press the accerator to restart the engine. What pile of s*** that is, I have got to say this is my 4th and last Audi if this is how you get treated.

Steve you talk a lot of sense and I feel your right. My last four cars have been auto Audi's (I'm bit of a fan) the last two being Gen1 start/stop models, they have never missed a beat. I have logged an official complaint with Audi UK today and lets see were that gets us. £38k spent on a car my wife is frightened to drive and Audi's response is no fault found because the computer has logged an error. LOL

The system cuts out the engine regardless if your braking or not at low speed. If your just rolling in traffic the engine cuts out, my issue arises when it cuts on the engine and your on a slight incline. The car will start to roll back, so you press the accelerator to restart and because the wheels are moving backwards the gearbox crunches and fails to start. (I can only describe the sound as if your trying to change gear in a manual car without pressing the clutch in) Steve your idea of a dash cam inside is perfect, I'll set that up and post the video. I have a feeling this issue will be across the board with other models. thanks for the comments.

Hi Steve, I'm not sure when gen2 start/stop came out but on my previous two audis it only kicked in when you came to a complete stop. With gen2 it cuts in if your travelling upto 3mph, the after sales manager called it predictive stop. Which takes some getting used to tbh, it can cut in and out loads when moving in slow traffic (rolling with no brakes and power steering is stupid if you ask me). Anyway I'm getting used to it now but it just seems a daft system, for me start stop should only kick in when your stationary. On our car if we come to a stop using the brakes the hill assist kicks in but if we come to a stop naturally and start stop has kicked in hill assist is not engaged. If where we have come to a stop is on a slight incline the car will naturally start to roll back but when you press the accelerator to re engage the engine, I think because the cogs in the gearbox are moving backwards and the engine is trying to start it spits it's dummy out. So I'm rolling back pressing the accelerator and it can't restart forcing us to press the brake to engage hill assist. Which is crazy if this happens at the front of a roundabout with cars behind. (Accident waiting to happen) Audi's resonse so far, no fault found, turn off start/stop feature everytime we get in the car. Sorry for the long message, this has happened now 5/6 times in 4.5k miles. Sorry for the the long message but it's hard to explain and thanks for your comments so far.

We have hill hold assist which works fine when you come to a stop using the brakes. The issue arises when you come to a stop without braking I.e just moving along with traffic slowly and the start/stop kicks in <3mph. If this happens on a very slight incline as the car starts to roll back, (hill assist not engaged as we come to a natural stop). The gearbox crunches and the engine fails to start, if we then press the brakes to stop us hitting the car behind, the hill assists kicks in and the engines starts and we drive away. Feels like a design fault to me with gen2 start/stop.

It is, my wife is frightened to drive the thing.

Hi, Just wondering if anyone else is experiencing issues with generation 2 start/stop? We have a Q3 2017 with S-tronic and if the start/stop has kicked in at 3mph in traffic and you come to a stop and start to roll back, when you press the accelerator to restart the engine it fails to do so causing the gearbox to crunch and results in you rolling back a couple of feet. (Potentially into the car behind) The car has been into Audi with no fault found saying that it is the characteristics of generation 2 start/stop and we need to adjust our driving style. (Not sure how this is possible). Anyone having the same issue?