Thinking of purchasing car £18K what should be my starting offer It’s a used car and I want to get it at a good price?

When it comes to making an offer on a used car, there are a few things to consider. First, take a look at the car's market value. Check out the Kelley Blue Book website for an estimate of what the car is worth, based on its make, model, year, condition, and mileage. This will give you a good starting point for your offer.

Next, take a look at the seller's listing. Are there any features that make this car particularly desirable, such as low mileage or a recent service? If so, you may want to factor that into your offer. On the other hand, if the car has some issues, like a cracked windshield or a dented bumper, you can use that to lower your offer.

Finally, remember to be realistic. You don't want to lowball the seller, but also don't be afraid to negotiate. Start your offer at least 10-15% below the market value, and be willing to negotiate up from there. Most sellers are willing to come down in price, so don't be afraid to haggle. With a little bit of patience and careful negotiation, you should be able to get the car for a good price.