I am assuming that your $3000 down includes your registration, doc prep, first payment, and about $1700 cap cost reduction. I added a $575 bank fee to the cap cost. I am also assuming that you are getting a Premium model with the options you listed, and that you can get the car at invoice. According to the Audi September lease rates on Leasecompare.com the residual is 54%, 1% added for Audicare, and the money factor is .00108. I added .0004 to the money factor for the dealer thus using .00112. According to my calculations the base payment should be $516.55. I'm pretty sure that this is accurate. I hope that this helps. I chose Ibis white with the Magma interior for the 2.0 quattro premium coupe that I ordered two weeks ago.