If a repossession is 6 and a half years old can they still seize your assets?

I am assuming that the repossession happened 6 1/2 yrs ago. If that is the case then more than likely a third party collection agency is trying to collect the remaining balance after the vehicle was sold at auction. You need to check the statute of limitations in your state. Example in Texas it is 7 yrs , if you made a payment of 1 cent the debt would be valid and the statute would be reset.