Car Loan

I owe about $6200.00 on my 2000 tauras..my insurance say my car is worth $5500.00 and the blue book value is $5000.00. my question is if i wanted to trade in my car for an 2005-2008 nissan altima would i get a low monthly note or would it be high. i had my car little over a year and i am getting real tired of the car i having problems with the car....the car i want is an 2006 nissan altima and the cost of the car is $14,000.00..would they add the whole $6200.00 on the altima and the price will be $22,000.00 or would the buy my car for at 5000.00 and put the remaining balance which is 1200.00. i confused!!!

Some dealerships will pay off your loan at the $6200.00 then add the cost to your newer car. i did this on a 2005 pontiac grand prix this is how it worked i had a 2000- dodge intrepid i owed 4 grand on it they payed off that loan refinanced me on the grand prix which cost 14 grand. i then owed a total of 18 grand on a car that has a value of 14 new. but my payments went down, so i thought hey if i could afford to pay what i was paying on the dodge. then why not pay that amount on the grand prix? so even though i owe more then the car is worth i will have it payed off a year faster by making the additional money to the loan. i payed 225 for the dodge per month my payments on the grand prix was to be 199.00 so the extra 26 bucks goes toward reducing the int rest so yes i have a upside down loan but i have a great cycling car now