What's the penalty for an expired 6 month tow-car permit?

Advice perilous because if it goes public the government will find a way to enhance the banishment to the point of making a ban a lifetime issue regardless of circumstances. Knowing Mexico the following will come into play...

"Your passport was issued 2 years after your delinquency. Your name is the same. Other data like license plate, VIN or driver license have tripped warning signals in our system PROVE YOU ARE NOT THAT PERSON!"

Be careful and not throw the baby out with the bath water.