Certified Pre-owned Volkswagen’s go through a 150-point detailed inspection that includes manuals and documentation, recalls and service campaigns, transmission, brakes, steering, engine, fluids, battery, tires, brakes, suspension, drive train, frame and underbody, electronics, interior and exterior of the vehicle. Certified Pre-Owned (CPO) is a manufacturer-sponsored used vehicle refurbishment and warranty program that may also include special incentives and financing. Only Volkswagen's dealerships can certify a Volkswagen vehicle.