Bookmark and use this website:

https://afdc.energy.gov/laws/electric-vehicles-for-tax-credit

There are tabs there, to help, because there are at least three ways to check on this. By year purchased, by year in service, and whether it is used or new. For instance, one requirement changed in August 2022 (location of final assembly).

"Said client, said "all my friends are taking it!" "

Stop letting clients tell you how to do your job.