Choosing a car dealer and getting the best in most reasonable capital for you is a challenge and a talent you will have to nurture with.
-> do a good research and meet the customers of the dealer if they are satisfied.
-> if you are done with the first list visit them and note their interest in you personally.
->now you are done again evaluate them and shortlist them.If the number is less take a person who is good at negotiation and get the best deal.
-> if they are more in number then just manipulate them and et them come down by themselves as they are all in competition.But dont greed for more when you are done make the deal.