Peruse Tesla owner forums and reddit. The model 3 in particular has quality issues on brand new cars. Compare it to buying a Honda or Toyota - you're not going to have the kinds of problems described.
http://www.odyclub.com/forums/54-2011-2017-odyssey/197033-bo...
https://www.civicx.com/threads/any-issues-so-far-fit-finish-...
https://www.tacomaworld.com/threads/misaligned-rear-bumper.5...
And to address your other point, if you search the web for panel alignment issues on Honda or Toyota cars there seem to be plenty of those out there as well.