
Advertise it
If it's a high-value, prestige or sports model, then advertise in national newspapers' motoring sections, magazines and websites such as AutoTrader and Exchange and Mart, or appropriate enthusiast magazines. If it's a specialist-interest model, or would suit a particular type of buyer, then target those publications, i.e. classic car, motorsport-orientated, car tuning or modifications magazines or websites.
If it's a popular family car or not worth a huge amount, then try the non-specialist press: local paper, local advertising freesheets and so on. If it's an old banger, go for your local paper, titles and websites such as Loot, Friday Ad or anywhere you can advertise it free.
Consider putting a 'For Sale' sign in its window with a phone number and some details (though beware that some local authorities are now prosecuting people for doing this, in a bid to clamp down on dodgy unregistered dealers). Or how about posting its details, with a detailed description, on eBay?
What should I put in the ad?
Don't make any false claims as to the car's condition. Avoid hype like 'first to see will buy', 'probably the best around' and so on - it just makes you look like a dodgy dealer.
Stick to the facts: age, mileage, condition, length of MOT and tax, colour and model details such as engine size and specification level. If the advertisement includes a photograph, ensure it's taken in daylight, against a neutral, uncluttered background. A front three-quarters view is perfect.
Am I legally bound by the ad?
The car must be as described. If you lie about the condition of the car or say that it has features it doesn't, you can be sued for any losses the buyer incurs. If you make a false claim, you may be pursued through the civil courts. Also, the car must be roadworthy - it is a criminal offence to sell a car in an unsafe condition.