How do I know what a fair price is for a car?

Compare the out-the-door price for similar vehicles, matching year, trim, options, mileage and condition, from several sellers in your area. Look at published pricing guides, current manufacturer incentives, and how long similar cars have been listed. For used cars, factor in vehicle history and an independent inspection. OffLot lets you compare vehicles side by side and shows listing facts like days on market, price changes and MSRP, but it never labels a listing a good or bad deal, so you can make your own call.