I just rejected a White Model Y yesterday. I could see the alignment issues from 50 ft away. It had all the standard issues: hugely misaligned rear tail lights, both rear doors misaligned, trunk looked like it would scrape itself opening/closing due to alignment, crooked frunk, condensation in headlights, some small paint defeats.
But this is what resulted in a <2 minute rejection (right on the front of the car visible from at least 20 ft away):
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I was hoping that the forums had just biased me and that most cars are actually in great condition. However, I took a look at the other two they had on the lot and they all had medium to severe issues. Admittedly this was still only 3 cars. They told me rejecting would result in another VIN in august or September at the earliest. Sounds good to me, if it's bad on the 2nd try I will ask to delay to 2021.