Rodge123

The car was at idle and the rpm were not fluctuating, could this be the case and still be an air leak / hunting?

I have the 40 TDI 18 months now and reported this issue to dealer ages ago, they couldn’t find anything wrong. It only happens the very odd time and only on startup of car. (Maybe only once every second or third month roughly) I can’t seem to pinpoint any pattern, not in cold weather or when car hasn’t been started for a while for example. It sound like something is missing a beat or not spinning smoothly is the only way I can describe it. I’ve attached a video with it happening the other day for the first time in about 3 months I’d say. I might forward on video to dealer and ask them again, they couldn’t reproduce it when looking at it before and I hadn’t any video for them. Any ideas? IMG_0116_480.mov

Very informative thread guys, thanks for all the info. I’m having this same delayed acceleration from stop with my 2019 A6 40TDI. Never owned a diesel or Audi before so wasn’t 100% if was normal. As others have mentioned, it’s actually quite dangerous at times. Have mentioned it to my main dealer here in Ireland, car is in for new tyres and loose door seal fix in new year. Problem is that it doesn’t happen all the time, I can’t seem to pinpoint any pattern for why it happens sometimes. Can just see the dealer saying we couldn’t reproduce the issue when test driving it! Does anyone know if these ECU updates are available for the C8 40TDI? Thanks