Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.6315

Sec. 6315. (1) A certificate of waiver shall be issued for a motor vehicle that fails an initial inspection and a subsequent reinspection if the actual cost of maintenance already performed and designed to bring the vehicle into compliance with clean air act standards in accordance with the inspection report is at least $300.00, adjusted in January of each year by the increase or decrease in the Detroit consumer price index rounded to the nearest whole dollar.

(2) The costs covered by vehicle warranty and the costs necessary to repair or replace any emission control equipment that has been removed, dismantled, tampered with, misfueled, or otherwise rendered inoperative shall not be considered in determining eligibility for a certificate of waiver pursuant to subsection (1).

(3) Owners of vehicles subject to a transient IM240 emission test may apply to the department for a certificate of waiver after failing an initial inspection and a subsequent reinspection even though the dollar limit stated in subsection (1) for the cost of maintenance already performed has not been met. The department shall perform a complete, documented physical and functional diagnosis and inspection. If the diagnosis and inspection shows that no additional emission-related repairs are needed or that the vehicle presents prohibitive inspection problems or is inappropriate for inspection, the department may issue a certificate of waiver.

(4) Issuance of a certificate of waiver shall be conditioned upon meeting the criteria established by regulations promulgated by the United States environmental protection agency in 40 C.F.R. 51.360.

(5) A temporary certificate of waiver, valid for not more than 15 days, may be issued to a motor vehicle to allow time for necessary maintenance and reinspection. A temporary certificate of waiver may be issued not more than twice for the same motor vehicle.