(1) The department determines on the basis of an audit that fees for registration and licensing are not paid as required for 5 percent or more of the total vehicles in the fleet which are registered in this state;
(2) Of the conviction of the fleet registrant for any unlawful use of any license plate issued for a fleet vehicle;
(3) Of the failure of the fleet registrant to pay title and ad valorem taxes as required for any fleet vehicle; or
(4) Of the failure of the fleet registrant to pay enrollment fees as required.