http://www.carfax.com/car_buying/guide_to_certified_preowned.cfm - Purchasing a car is often cheaper if you buy a car for sale by owner. Used cars by owner demand careful investigation for you to make the best investment. Simply go online and use the VIN of certified used cars. Certified pre-owned cars are only a good investment if you have researched the vehicles history report and carefully assessed the condition of the car.
