The dealer going offer you a crazy and insane low price on the trade in. Take your car to Carmax or private sell.

I just placed an order for a 2012 35i Premium about two weeks ago. While waiting for the paper work, I asked my CA for a trade-in value for my 2007 X5 at 45K miles w/ premium package, technology package, rear climate, running board, and non-oem 20" wheels. Abt. 30 mins later, he came back and gave me an offered at $23K and he stated that is the best that they can do. Yup, $23K for my car. I casually asked him to give me my car key back.

I took it to CarMax and they offered me at $27.5K.

Try to put your car on Craiglist. I just sold my car less than two days of listing for $30K.

Good luck!