Gearbox seem to slip in 2nd and 3rd gear

Hi Casey, thanks for the feedback! I actually had the car at Audi for a whole week, because it is still under maintenance plan, and they did all the diagnostics and told me they cannot find anything wrong! That is why I try to solve it myself now!!!

If you are under original or CPO warranty for the powertrain, ask them to be certain that the transmission is covered if it goes out. If it does, drive it like normal, don't be gentle, and call AAA for a tow when it no longer works. You don't want to nurse it until it's out of warranty. Audi is not known for being gentle with owners on repairs out of warranty, even when you reported the problem under warranty. Honestly, if it were mine, and I knew it would be covered, I would drive it like it was theirs with a smile on my face. Warranty is just for this kind of thing.