weather you are buying or trading in any vehicle just remember this. If it has over 100,000 miles or is more than 5 years old the vehicle cannot be financed buy a prime lender and it cannot be warranteed by the manufacturer, im saying if you have an f150 then ford motor credit will not lend you money because the vehicle has too many miles, and FORD ESP(extended service plan) will not warranty the vehicle, therfore its value decreases exponentially. if you are looking into buying one you need to consider that with over 36000 miles most bumper to bumper warranties expire, once that expires the cost goes way up to put an extended warranty on it. also after 36000 miles you need to consider the fact that some ware and tear parts are going to do just that. my suggestion that is if you want to buy one there are 2 things you need to do. 1 look into getting a DEMO, after a certian period of time, usually 90 days in stock, you can stil get the rebate and to get rid of the old unit the dealer can usually be talked int giving you theyre hold back, and floor plan money, that should take it up to $4000 below invoice. 2 look for a 1 or 2 year old used one with 15000 to 30000 miles on it and spend the extra money to get an extended warranty. remember with a used vehicle , no matter how well it has been looked over by the dealer, you risk buying someone elses problems. I sold cars from 1998 to 2000, and i was a finance manager at a dealership from 2000 to 2005. pm me if you have any other questions.