No. The Tax liability is the tax calculated on your Adjusted Gross Income. Not the Tax due at the end of your return. It's the Tax on all your income before your withholding is taken out. The EV credit only reduces the TAX to zero. Then you will get all your withholding back.
Look at your 2022 tax return. What is on line 22? Subtract 7,500 from line 22 (but only to zero) and then redo the math all the way down to the refund or tax due.
