My uncle owned a car dealership in Tennessee for over 30 years and gave me the following advice:

Never trade in your vehicle. Sell it privately.

This coming from a dealer who made a good chunk of his change buying and selling used vehicles. It's not that much of a hassle to sell privately, and you will get much more than what the dealer is offering, so it's well worth your time and effort.

Cheers,
Brad


To be old and wise, you must first be young and stupid.