If you want to determine the value of a used car, there are a couple ways you can do that. One thing you can do is visit a site such as Kelley Blue Book or Edmunds. You will input information such as brand, style, options, mileage, condition, as well as your zip code. This will help find the best estimate for your vehicle's value. Another option is to check local classifieds, your local newspaper, Craigslist, or other places for car's similar to yours in condition, mileage, etc. You may even contact a local auto dealer for an estimate.