How Much is Your Car Worth?
Go to the Kelly Blue Book  Web site for a full range of listings for new car pricing, used car rates and a variety of other tools to help in deciding where and when to buy a new vehicle.
The site includes quite a bit of research information, including new car reviews and even a Title History Search , ideal to figure out whether a used car has ever been in an accident.
This site is also useful when attempting to determine the value of automobiles donated to charity. Keep in mind, however, when contemplating how much you can deduct on your tax return for donating a car to charity, the Blue Book value is merely a starting point. The IRS expects you to reduce the donated value of the vehicle to the amount you would be able to sell it for in an arms-length transaction.
Meanwhile, if you're thinking of purchasing a new car, stop by the AccountingWEB calculators  to calculate how much car you can afford to buy.