2008 Audi S6
Variants experienced: BOTH
79k miles, been happening since I bought it with 53k
No dealer action has been taken, no fixes, nothing
Variant 1: To ensure I’m experiencing the same issue, when I’m coming to a stop, as the car downshifts (or I downshift, either way) to first gear, if the brake is applied, the car will lurch in varying intensities. If the brake is not applied during the downshift itself, the lurch will not happen at all.
Variant 2: Seemingly less commonly, if accelerating during the downshift from gear 2 to 1, depending on when you began accelerating during the downshift, the car will almost trip up and lurch. If I wait until the car has shifted into gear 1 completely, I have no issues accelerating.
Another observation, possibly related:
Sometimes, the car will stop accelerating at 6k RPM almost exactly in second gear after accelerating from a stop. First gear will go all the way to the redline, I’ll shift, second gear will get to 6k rpm, and the car will decide to take a nap. It doesn’t always happen, and I’ve had other issues I’ve been trying to resolve so I don’t have all the data that I need on it yet.
I don’t use Sport Mode, but I definitely noticed it more when I did, but I had just purchased the car at that point so I’m not sure if it happened more frequently or the same in sport mode, although if I had to guess, I’d definitely say it happened more in Sport Mode for me.