negative equity in trade

It might not effect anything at all on a deal on another vehicle as long as you are willing to pay the amount you still owe after you sell or trade in your vehicle. If you can't, that extra amount, depending on what it is would be rolled into the new loan, technically paying on a new car and one you don't own anymore. Of course your payments will be higher, or the term of the loan will be longer, and of course the interest might be higher. Again there are a lot of factors. But to boil it down, if you owe more than the car is worth, just continue to drive it, maintain it and make payments on it. Till it is paired off or you are on the plus side. Hope this helps.

You will be paying for two cars but only driving one. You are probably digging an even deeper hole.