Hey, your problem reminds me of difficulties I recently had with my 2010 Audi A3. It does sound a lot like a problem with the fuel pump. On my car, the software values for the pump were incorrect, which led to erratic performance and symptoms similar to yours. It was quite annoying and actually kept me busy for some time. The mechanic had to reset the software values and recalibrate the pump to get everything back to normal. It took a while, but since then my A3 has been running like a champ again. It was definitely a serious problem, but luckily it was fixed. So if you go to the mechanic, that's the first thing I'd have checked. And don't worry, these problems happen, and most of the time they can be solved!

(Translated from German)

Hey, thanks for the reply! It sounds really reassuring that you've been through the same thing before and the problem was solved. Do you happen to remember the price you paid for the repair? And has there been anything new with your A3 since then or is everything running smoothly?

(Translated from German)

Hey, no problem! I paid €45 to have the software values of the fuel pump corrected. Since the mechanic carried out the repair, my Audi A3 has been running smoothly again. So, the defect in the fuel pump was successfully rectified. So, don't worry about it. These things do happen, but as I said, they can usually be fixed! So far, everything is tip-top and running perfectly.

(Translated from German)

Wow, thank you very much for the information! That helps me a lot and reassures me. I think I'll take my Audi to the garage now and have the fuel pump checked. Otherwise it will run like a charm for a while from now on, ha ha! I'm looking forward to it. Thanks again for your help!

(Translated from German)