Make Sure Your Intended Organization is a 501 (c) (3)
While many organizations can claim non-profit status, donations to 501 (c) (4) organizations are generally not tax-deductible. Make sure your intended recipient has 501 (c) (3) public charity status
Complete Your Paperwork
Non-cash donations are the most common triggers of IRS audits, so it is important to keep thorough documentation of a car donation. Specifically, if your car is valued over $250, then you need to obtain and retain a written acknowledgment from the charity. Additionally, if your car is worth more than $500, you must complete section A of the IRS Form 8283 and attach it to your yearly taxes. Furthermore, if your car is worth over $5,000, then you must have an independent appraisal and fill out Section B of IRS Form 8283.
For more information, please see IRS Publication 4303, A Donor's Guide to Vehicle Donations. http://www.irs.gov/pub/irs-pdf/p4303.pdf