Cars that are offered for sale by a dealer with warranties that extend beyond the manufacturer’s new-car warranties. Edmunds.com says to be called “certified used” the warranty must be backed by the vehicle manufacturer, which uses its dealer network to inspect and certify the vehicle and offer the extended warranty. Not all cars qualify, and terms vary from one brand to another. A true “certified used” or “certified preowned” program includes at least a 100-point inspection of the vehicle, Edmunds says. If a car qualifies, factory-trained technicians fix problems.