How much should I save to buy a new car?

I have always wanted to buy a Ford Mustang. I finally have a decent paying job to where I should be able to afford one. I just want the basic V6 mustang just as a start and as I make more money in the future I will get a better one.

The most it would probably cost would be about: $27,000

A few questions:

How much money should I put down? (percentage or actual figure doesn't matter)
How much money should my Emergency Fund be? (Example: 3 months of personal expenses)

I just don't want to buy it and not be prepared enough. I'm good with money and I save as much as I can. Any other suggestions would be good as well.

A Mustang is a guy's car.

Save up 32000. Will save you 10000$ Easily.

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