States Without Emissions Testing 2025

	State	Emissions Test Required↑	Additional Testing Requirement Details
	Alabama	No	None
	Alaska	No	None
	Arkansas	No	None
	Florida	No	None
	Hawaii	No	Annual safety inspections required (every six months for emergency vehicles, school buses rental cars, and public transportation vehicles).
	Idaho	No	No longer required as of July 01, 2023
	Indiana	No	Biennial emissions inspections are required for Lake and Porter counties
	Iowa	No	None
	Kansas	No	None
	Kentucky	No	None
	Michigan	No	None
	Minnesota	No	None
	Mississippi	No	None
	Montana	No	None
	Nebraska	No	None
	North Dakota	No	None
	Oklahoma	No	None
	South Carolina	No	None
	South Dakota	No	None
	Tennessee	No	None
	Washington	No	None
	West Virginia	No	Annual safety inspections required
	Wyoming	No	None
	Arizona	Some locations	Biennial emissions inspections for Phoenix and Tucson metro areas
	California	Some locations	Biennial emissions inspections for out-of-state cars or in-state vehicles seven years or older (in 41 of 58 counties)
	Colorado	Some locations	Biennial emissions inspections in 9 out of 64 counties (with some exceptions for vehicles 7 model years old or newer)
	Georgia	Some locations	Annual emissions inspections for the Atlanta metro area
	Illinois	Some locations	Biennial emmision inspections required for cars older than 4 years in the Chicago metropolitan area. The St. Louis Metro area also requires biennial emissions inspections
	Louisiana	Some locations	Annual emissions inspections required for the Baton Rouge metro area. Annual brake inspections are required for New Orleans area vehicles. Biennial safety inspections also required.
	Maine	Some locations	Annual emissions inspections for vehicles registered in Cumberland County. Annual safety inspections are required statewide.
	Maryland	Some locations	Biennial emissions inspections are required for 13 of 23 counties
	Missouri	Some locations	Biennial emissions inspections required for the St. Louis metro area. Biennial safety inspections are required for the whole state.
	Nevada	Some locations	Annual emissions inspections are required for urban areas of Clark and Washoe County (with some vehicle exceptions)
	New Mexico	Some locations	Biennial emissions testing required for Bernalillo County.
	North Carolina	Some locations	Annual safety inspections are required, with annual emissions inspections for 22 out of 100 counties.
	Ohio	Some locations	Odd/even emissions testing required for Cleveland metro area.
	Oregon	Some locations	Periodic emissions inspections are required for Portland and Medford metro areas.
	Pennsylvania	Some locations	Annual emissions inspections in 25 of 67 counties. Annual safety inspections are required statewide.
	Texas	Some locations	Annual emissions testing required in large urban areas, with annual safety tests required statewide.
	Utah	Some locations	Periodic emissions testing is required only in the four most populated counties
	Virginia	Some locations	Biennial emissions testing for urban and suburban areas of northern Virginia. Annual safety inspections are required statewide.
	Connecticut	Yes	Biennial emissions inspections are required
	Delaware	Yes	Biennial emissions and safety inspections required
	District of Columbia	Yes	Biennial emissions inspection required
	Massachusetts	Yes	Annual safety and emissions inspections required
	New Hampshire	Yes	Annual emissions inspections required for models less than 20 years old. Annual safety inspections are required for all vehicles.
	New Jersey	Yes	Vehicles are exempt from inspections for the first five years, then biennial emissions testing is required.
	New York	Yes	Annual NYVIP3 OBD II emissions inspections for applicable non-diesel and non-electric vehicles under NYVIP3. Model years newer than 25 years light-duty diesel vehicles are subject to OBD II.
	Rhode Island	Yes	Biennial safety and emissions inspections required
	Vermont	Yes	Annual safety and emissions testing required
	Wisconsin	Yes	Biennial emissions inspections are required for select counties