Yes, I have donated a car to The american lung association. it was a 1993 honda civic (I should have done the head gasket and kept the car) I called them, took all my information and they told me when they would be there and all I did was leave the keys in the glove box. A few weeks later I got an IRS form that was blank in the mail. It had thier information on it. No numbers or anything like that. There was also a paper with values on it, High retail, low retail etc. High was $4000 and low was $2000(ish), My accountant took $2500 because although it was in good shape, many people donate cars that are junk and don't run and take the high value. That constitutes an IRS red flag, and they are bad.
I am sure the car had to run and be driveable (99% sure)
have the title if you want the tax write off, other wise it is useless to them.
If you are going to do it, go with a BIG organization (like American lung association etc.) I called a place that I heard on the radio and I felt they were shady.
I figured what the heck and donate it, why bother trying to sell it? I got it for free, needed a motor, put it in, drove it for about 1 year, then the HG went. What was I going to get $1000 if I am lucky? Yes, the cash would be nice but this was easier! And since I smoke like a chimney, maybe they can help me out some day!