Are there any tax implications to being upside down on a car loan? Since you are going to be taking a loss, I seriously doubt it. I am not an accountant. You need to consult one to see if the loss can offset a gain. I seriously doubt that also.
Is there any advice that anyone has for reducing this value? If you mean the amount that you are going to lose in the transaction, the answer is NO. You got the car and the loan, there is not much you can do, but take the hit.
PS: Make sure you read my disclaimer