Questions about trade-in for car

Question

I appreciate any answers.

I searched around and couldn't find the answer I understand.

I bought a volkswagen passat 2002 gls.

I'm a first buyer and didn't have any credit.

The car value is 11,000 and I paid 2,500 for entry, so I financed 8,500.

My interest rate is pretty high. Monthly payment is 303 for 51 months.

I plan to pay more than 370 per month to pay off faster.

So 303 for 51 months=15,400.

15,400-8,500=6,900 comes from the interest.

I want to trade in the car for different car.

Let's say the trade-in value is 6,000.

By 18 months, I'll have about 7,000 paid off and my credit will be very good.

So, 7,000 6,000=13,000 will be paid off from my debt.

My car's price was 11,000, so does this mean I get 2,000 discount from my new car?

Or do I have to finish paying for the 2,000 left from 15,000 to not be upside down?

Is it better to refinance, so that I can lower a lot from my interest? and then trade-in?

Thank you for your time reading this,

Answer 1

ok i found a  car that's listed for 6000. my car that i want to trade in is paid off. i check in the kelly blue book and my car is worth about 2500 to 3500, I'm planning to put down about 1000. what do you think my payment will be? and if this is possible?