Should you wait until you actually have a down payment to go shopping for a car?

I got approved for an auto loan but I don't have enough for a down payment yet. I have an appointment to go to the car dealerships in a few days but I'll have to tell them that it'll be about a month or 2 until I have a down payment. Will they get mad? Or is this normal? This is my first time buying a car. show more I got approved for an auto loan but I don't have enough for a down payment yet. I have an appointment to go to the car dealerships in a few days but I'll have to tell them that it'll be about a month or 2 until I have a down payment. Will they get mad? Or is this normal? This is my first time buying a car.
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