Transmission Slipping?

Hi all,

2018 Touring L Plus. 55kish miles.

Bought the car used in Feb 2021 from Carvana. We've got about 4 months left in our power train warranty. According to the NHTSA and SaferCar websites, a VIN search says I have no open recalls.

I've experienced a occasional issues with the transmission engaging roughly since we've owned it. Sometimes it's a pretty distinct sounding/feeling clunk when putting it into drive. Sometimes the car kind of lurches roughly forward. It's infrequent and inconsistent though. Haven't figured out a way to replicate.

That said, shortly ago today had a more serious issue promoting this post. From a full stop, as I was negotiating a left hand turn at a light, the car stopped accelerating halfway through the turn. Engine was still turning. Only lasted 2-3 seconds, but noticable enough to be concerning. Things seemed to reengage normally and smoothly before I was all the way around.

I want to get this inspected by the dealer, but it's infrequent enough I doubt I'll be able to directly demonstrate a problem.

Couple of question I guess...

One, is there a database somewhere showing when/where recall work was completed?

What can I do to "prove" the issue, or at least narrow down a potential inspection issue for them?

Is there any effective way I can test for issues?

Thanks!