Oddly, I think that this is likely a mistake on the dealer’s part. Not worth risking reputation over an interest rate difference of less than one % point.
And a lot of sales people are complete analphabets when it comes to simple math. Sadly.
I’ve spoken to a MORTGAGE BROKER who thought .20% and 20% were the same thing. He meant 20%, but he was saying “point twenty percent” which confused the hell out of me till I got what he was saying.