[RandallNeighbour]

Ask for 12% off the car, settle for 8% off MSRP plus a 2 year warranty extension at no extra charge. This would cost you thousands more, but doesn't cost them nearly as much because they markup all the extended warranties they sell.

As a general rule of thumb, I always hammer the sales manager or the finance manager — after the deal is considered done on their end — for things that don't cost them what I would pay retail for at the dealership (extended warranties, free oil changes, paid maintenance intervals, floor mats, a cap, a shirt, or whatever you want that you know they don't pay much for but charge you out the yingyang to get.