The value of your car is affected by a number of factors, some of which are under your control and others of which are not. You should consider the following if you want to sell your car for the most money: Repair any damage; keeping your vehicle in good mechanical and visual condition will boost its worth by making it more appealing to buyers. Have a valid NCT; if your current NCT expires in less than 6 months, it may affect how much your car is worth because the new owner will need to get a NCT soon after buying the vehicle. Keep all service records so you can prove that your vehicle has had regular maintenance from a trustworthy source. Clean your car. This is a simple way to get the greatest price for your vehicle. A clean vehicle is more appealing and can help to ensure that no dirt is mistaken for a deeper scratch or dent.