Facebook for sale or free pages fro your area, Cheapcycle, Gumtree, Vivastreet. They are all free but I always use Autotrader and have always sold within the first week. You can do it online and post photographs or video of your car and the ad goes live immediately. Do a bit of research first and see if there are other cars similar to yours for sale on there and what they are charging, then look up the sold ones and see what they sold for, that will give you a good idea of how much you could expect to get. Just be careful of Bankers Drafts because there have been some really dodgy ones out there. Fraudulent Drafts from branches of banks that dont even exist, so do a proper check. The ploy is that they usually come and see the car over a weekend or late on a friday when you cant check or get to pay it in until the Monday, by then they are long gone with your car and insurance wont pay because you willingly handed your car and documents over. ( it happened to a cousin of mine with a VERY expensive car and fortunately the police found the car a few days later trying to board a ferry )