Just got a call from the dealer. These are basic numbers and not confirmed.

I had them run both the 15K and 18K miles per year since the pre-paid miles above 15K per year are $.15 per mile vs $.25 per mile at end of lease for over miles.

Model: 2009 Q5, Premium Plus (no nav), $42.8K
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36 month lease, 15K miles per year, $3K down, $645/month
36 month lease, 18K miles per year, $3K down, $687/month

Of course these numbers will vary based on how much you put down, I just thought $3K was a reasonable amount to put down for a lease.