just emailed asking them to check other banks. No additional credit inquiry required. I believe they work with 5 different banks.
I asked for a lower rate (received 2.49) and was told no lower options. Going to check with other banks while waiting.
Not saying you are wrong, but hmm that's interesting since the credit inquiry is bank specific (or at least it was for me). For example, my inquiry reflects on my equifax report as "Wells Fargo Auto Finance".
Assuming that I declined that rate offer from WF or asked tesla finance to check with another lender, I would assume that the next bank would perform a credit inquiry of their own for underwriting.
When i asked tesla if it would require another credit pull, they said they could use the first pull with other banks so no additional pulls are needed. They checked 3 banks for me and only 1 pull showed up on my credit report.