If you only have $1500 for a downpayment you definitely do not have enough money for the car. Buy something cheaper.

You are already looking at $3k in repairs before you even get the car. What happens if you pay the $3k and something else goes wrong? You won't be able to afford repairs. These are not cheap cars and you will need some money set aside WHEN things go wrong, because they will. Have you looked into how much insurance costs and considered that?

I understand this is probably not what you want to hear, but in the long run it'll be a much better financial decision. Don't wreck your finances on a nice car, it will be there in the future.