you have an established relationship with a BMW dealer, they will generally start at high blue book (retail) or even higher for any CPO model. The CPO signification and the additional warranty extention to 100K miles adds a $1500 premium to the sales price of the vehicle. At least, that's what the dealer wants you to think. The CPO warranty is definitely a benefit to the consumer, but it is a huge marketing tool to the car maker and therefore is a discountable item.

Use the KBB.COM website as your guide. Look at the BMWUSA.COM CPO website to find comparables. If you can get an X5 out the door for the "LOW" Kelly Blue Book price (wholesale), you've done good. Don't jump on the first vehicle that you fall in love with. There are plenty of BMW X5's out there. With patience, you will find the right deal.