The sky is the limit for donating vehicles to charity. Search the Internet, and you will find more than 50,000 listings soliciting car donations and other vehicle donations. With the popularity of these programs, it is common for charities to accept most any kind of vehicle, in any condition. There are charities that accept cars, campers, RVs, boats, planes, motorcycles, trucks, even autos that don't run.
For road vehicles, most charities require inflated tires so the vehicles can be towed away. The charities won't use most of these vehicle donations in their day-to-day charitable works. Instead they will sell the vehicles, usually at large auto auctions, and use the proceeds to support their causes.
