The only way to claim the full credit is to increase your taxable income in some way so that the credit can offset the higher tax. (That means that whatever you do to increase your taxable income will in fact be tax-free.)
The simplest things I can think of involve investments.
a. Change your work 401k contributions from pre-tax to after tax (Roth). You will pay tax on the contributions now instead of taking a deduction (but the tax will be offset by the credit) and then you will pay no tax when you withdraw after retirement. Assuming your top tax rate is 22% or 24%, then for every $1000 of credit you need to cover, increase your taxable income by $4000-$4500.
b. If you contribute to a private tax-deductible IRA instead of a work plan, change your contributions to a Roth IRA.
c. If you have a taxable broker account, you could sell any investments with long term capital gains to realize (cash out) those gains. For long term capital gains at 15% tax, you would realize $6666 in gains for every $1000 of EV credit you need to use up. Since the gains will end up being tax free, you can re-invest them in your account and that will increase your basis and reduce your taxable gains on future sales.
[Edited to add]
d. If you have an existing traditional (pre-tax) IRA, you can perform a Roth IRA conversion. This moves some money from a traditional IRA to a Roth IRA. You pay income tax now on the converted amount (which is offset by the credit) and then you won't pay tax when you retire. If you have a workplace retirement account (401k, 403b, etc.), you may be able to perform a Roth conversion inside the work plan, to convert some money from a pre-tax 401k to a designated Roth account. This is not an IRA becasue the money is still in the workplace plan, just designated differently. The tax effects are the same. Depending on your tax bracket, you would convert $4000-$6666 per $1000 of EV credit you need to use up. (Not all workplace plans allow in-plan Roth conversions, you will have to ask your plan.)
Another option could be to defer making large charity donations until 2024. By not making a planned donation in 2023, your taxable income will go up and be offset by the credit, then you make the large donation in 2024 and take a larger tax deduction on your 2024 return, reducing your tax.
