when i was shopping for my 2013 x3 28i, most dealers would only do 5~6% off for custom order. Finally a dealer told me he could agree to do 7% off for custom or 8% off if I buy in stock. I walked in and bought a in stock X3 with 9% off MSRP. They told me they could do it because it was end of the month.
Above discount should not include any BMW incentives.