Find a charity or non-profit organization you believe in. It is one thing to donate a car simply for the tax relief, but find a charity that you feel strongly about to donate your car to. You won't only be helping yourself, you will be helping others that you care about.
Thirdly, make your donation - making sure that it is tax deductible. In most cases this will be the full value of the vehicle (actual market value, not Blue Book), but state laws may vary for state income tax purposes. If you have any question about this, you should see your tax advisor.
To prevent over-estimate, the IRS requires people who donate their car to produce a document from the charitable organization specifying the resale price of the car after the car is sold off. Automobiles with retail values up to $500 are exempt from this rule. In any case, make sure you get a receipt detailing your car donation. Requesting a receipt may also be necessary if you have your taxes prepared by a paid preparer.
Donating a car may sound like a big undertaking, but it's not. You can accomplish three things at once - getting rid of an old car that is taking up valuable space, helping your favorite charity, and getting a deduction on your income taxes. If you have an old car and want to reduce your tax payment, donating a car might be right for you!