Don't fall for the how much monthly are you looking to spend sales tactic because dealers can easily get that for you but they'll add it to where you are paying on it for 8+ years. Depending on what you are buying you do not want to exceed 5-6 years maximum imo.

Also research multiple dealers and cars online and try and negotiate online between multiple dealers, But be wary of advertised internet prices as they will include a bunch of rebates as the rock bottom price but you may not qualify for any of them when you go in to negotiate.