It all starts with the eligibility requirements, which are extraordinarily broad. A CPO BMW must be a late-year model with fewer than 60,000 miles, which means that BMW will actually consider certifying moderately older cars if they have low mileage. Most manufacturers won't certify cars that are more than a few years old, so we salute BMW for leaving the door open to well-maintained models of a slightly earlier vintage.
But the phrase "well maintained" is key. Once a used BMW has been deemed eligible for the program, it is thoroughly inspected and road tested by a BMW-trained technician. In other words, simply having low miles isn't enough; the car must also have been kept up well enough to please a strict BMW expert. If it gets a passing grade, the car then receives any scheduled maintenance that hasn't already been performed. Furthermore, CPO buyers are provided with the car's complete Carfax history report.
Finally, every CPO BMW gets a two-year/50,000-mile warranty on top of any remaining coverage from the original four-year/50,000-mile warranty. Select out-of-warranty cars receive CPO status with the full two-year warranty. Although the warranty covers most unexpected repairs, we advise reviewing the terms beforehand [http://www.bmwusa.com/Standard/Content/CPO/Warranty2.aspx], because some items are explicitly excluded. CPO customers also receive two extra years of BMW roadside assistance.
So car shoppers looking at a used BMW have every reason to feel confident they can get a good buy.