Question: questions to ask when negotiating a car?
Answer: What other fees will I be charged? Another way to ask this question is, "What's my out-the-door price?" Up to now, you have probably been negotiating the price of the car only. ... 
How much is your documentation fee? ... 
Are there any dealer-installed options on the car? ... 
How many miles are on the car? ... 
Can you deliver the car?