Changes to the vehicular inspections requires that all vehicles have rear seat headrests. Vehicles without the headrests would fail the inspection until they are installed.

According to Riteve, the vehicular inspection service, the Consejo Nacional de Seguridad Vial (COSEVI) has issued a directive that will allow vehicles registered prior to January 30, 2013 to pass the inspection if they do not have the headrests.

All vehicles registered after January 30 will have one year to correct the problem.