This is probably too late to help...but there are a number of things to consider. Take a tire depth gauge and meausre the available tread left...if it's under 7/32nds, you might want to get them to give you an allowance or put new tires on it. Ask to see their XX point inspection form and review it with them...do all the lights, turn signals, interior lights, dash lights work? Are there any maintenance recores available? Did the car come from their dealership and if so, they would have records...that's ideal. Ask for a CARFAX report on the car and review it with them...how many owners, was it a lease return? Any accidents noted? Look at the oil dipstick to see if the oil is fresh...ask when the last flush of the radiator took place....I think they need to be flushed every so many years...not sure. What's the color of the brake fluid. Is there any notation that any fluids were changed? How old is the battery? Five years is the usualy Drop Dead life of a battery. Have them replace it if it's old, or at least negotiate for the price of a new battery off the sales price...same for tires. Is the car a "certified pre owned"? If so, look at the inspection report.
Does it have a spare? Has it been used? If the tires are new, are they good ones or cheapies. Is there wheel locks on the wheels and if so is the key there? Are the rims scratched or have road rash? Do all the accessories work? Lights, turn signals, back up lights, parking lights, emergency flasher etc. Go thru each one because once you sign on the dotted line, you're out of luck. If you don't make a notation and get them to agree to fix or replace the whatever-it-is before you drive off the lot, you're out of luck. There are two factions operating at the dealership....the sales personnel, and the service personnel. Sales sometimes makes promises or statements in the heat of battle (so to speak) that without written documentation, the service manager will deny unless he sees it as part of the sales contract. It's the service department that has to replace or repair something thats not right or make good some promise that the sales folks made to you...and each has their own budget. Sales gets a commission for the sale...the service department has to eat the cost of the whatever-it-is from their budget.... Ask me how I know.....Most dealerships will try to make it right...depending upon the cost of making it right.
Hope this gets to you in time...but more than likely it didnt'. Best of luck to you in your ownership of a nice car.
2009 Murano LE, white/tan, 48K miles; with all the amenities you can pack into this thing. Whoever had it first was obviously a doo-dad guy. Can't watch DVD movies because the headrest screens are facing backwards!!