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States that are not in the checker
These 23 states are not one group. For some, an official source says in its own words that the state requires no emissions test, or that a program ended. For others we found no official statement at all, and that is all this page claims about them.
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Where does an official source say no emissions test is required?
3 states. The sentence is the agency’s own, and each one speaks only for what it says: read the words “for registration” where they appear.
Kansas
The State of Kansas does not require emissions testing.
The agency’s page: Kansas Department of Revenue Division of Vehicles Home Page (Kansas Department of Revenue, Division of Vehicles).
Mississippi
No, Mississippi does not require emissions testing for motor vehicles as a condition of registration.
The agency’s page: Motor Vehicle Frequently Asked Questions (Mississippi Department of Revenue).
Oklahoma
Unlike some states, Oklahoma does not require emissions testing for vehicle registration.
The agency’s page: Auto & Vehicle Services (Service Oklahoma).
Where does an official source say a program ended or was repealed?
5 states. Some of these lines are from a law or a legislative paper and not from a page written for drivers, and some are old. Each says what happened at the time it was written. None of them is our own conclusion about today.
Florida
The only official text we found is a Florida Senate bill page; its lines are quoted below. We did not find a current agency page that speaks about emissions testing.
repeals provisions which provide for inspection of motor vehicle exhaust emissions
Approved by Governor; Chapter No. 2000-266
The agency’s page: Motor Vehicle Registrations - Florida Department of Highway Safety and Motor Vehicles (Florida Department of Highway Safety and Motor Vehicles).
Idaho
In 2022, the Idaho Legislature passed a law to repeal the state requirement for vehicle I/M programs (e.g., emissions testing), effective July 1, 2023.
In 2023, the U.S. Environmental Protection Agency approved the removal in Ada County
Without the I/M programs, the motoring public can still take steps to reduce emissions by considering the suggestions listed below.
Also on those pages:
However, modeling results show I/M programs are not as effective as they once were due to vehicle turnover and new, stricter federal motor vehicle emissions standards.
Additionally, air quality in the Treasure Valley has improved over the past three decades and the area is currently meeting all national health-based standards.
The agency’s page: Vehicle Emissions - Idaho Department of Environmental Quality (Idaho Department of Environmental Quality).
Kentucky
The lines below are from three documents; read each with its source. We did not find one official sentence about the whole state today.
After operating for six years, the Vehicle Emission Testing (VET) Program in the northern Kentucky counties of Boone, Campbell and Kenton ended when the doors closed on Nov. 2, 2005.
The VET program required annual emissions tests from all vehicles in Louisville, except construction and farm equipment.
In 2003, the VET program ended.
Also on those pages:
EPA Approves Discontinuation of Kentucky Inspection and Maintenance Program
The agency’s page: Vehicle Services - DRIVE (Kentucky Transportation Cabinet) (Kentucky Transportation Cabinet).
Minnesota
The quotes are clauses from a session law. The Minnesota Pollution Control Agency page answered our reader with a bot check.
An act relating to the environment; providing for the termination of the motor vehicle emissions testing program by March 1, 2000, or earlier
a motor vehicle is not required to be inspected annually for air pollution emissions on or after March 1, 2000, or on or after the first day of the second month following the month a notice is published in the Federal Register by the United States Environmental Protection Agency redesignating the Twin Cities nonattainment area for carbon monoxide to attainment for carbon monoxide, whichever is earlier.
The agency’s page: Driver and Vehicle Services | Minnesota Department of Public Safety (Minnesota Department of Public Safety, Driver and Vehicle Services).
Pages that did not open for our reader:
- Minnesota Pollution Control Agency, Vehicle emissions (answered our reader with a bot check on November 11, 2026)
Washington
After 38 years, Washington's emission check program ended Jan. 1, 2020.
With the end of the program, vehicle owners are no longer required to have their vehicle's emissions tested before renewing their vehicle registration.
After 38 years, Washington's vehicle emission check program ended Jan. 1, 2020. An emission test is no longer required before renewing your vehicle registration.
Also on those pages:
In 2005, the Legislature phased out emission testing based on our calculation that the program wouldn't be needed by 2020.
Driving a vehicle with modified emissions equipment or a vehicle that smokes is still illegal in Washington.
The agency’s page: Emission checks ended - Washington State Department of Ecology (Washington State Department of Ecology).
Where is a repeal not settled?
New Hampshire
Read these lines together. The New Hampshire DMV and Department of Environmental Services websites refused our reader, so we have no agency sentence telling drivers what applies today.
Repealed by 2025, 141:253, IV, eff. Jan. 31, 2026.
[RSA 266:59-b repealed by 2025, 141:253, XIV, effective contingent upon the conditions specified in 2025, 141:255.]
New Hampshire has enacted legislation, House Bill 2 (HB2), mandating the repeal of the motor vehicle I/M program under portions of New Hampshire’s Revised Statute Annotated (RSA) Chapter 266 Equipment of Vehicles, Chapter 260 Administration of Motor Vehicle Laws, and Chapter 125–S Motor Vehicle Abatement Fund, effective January 31, 2026.
New Hampshire also submitted an associated State Implementation Plan (SIP) revision to remove the Motor Vehicle Emissions Inspection and Maintenance (I/M) program, which EPA also proposed to conditionally approve on August 11, 2026.
Also on those pages:
Vehicles subject to this requirement shall include model year 1997 and newer diesel-powered motor vehicles and model year 1996 and newer motor vehicles powered by any other fuel source.
This section shall not apply to vehicles 20 or more model years old which shall be determined by subtracting the model year of the vehicle from the calendar year in which the inspection occurs or to vehicles determined by the director to be rare or historically significant.
Pages that did not open for our reader:
- New Hampshire DMV website (refused our reader on November 11, 2026)
- New Hampshire Department of Environmental Services website (refused our reader on November 11, 2026)
Where did we find no official statement either way?
14 states. For each state, the lists below identify the official pages we read and the requests that did not open. We found no settled statement for the whole state in the material we could read. A missing statement is not evidence of a missing rule, so these states carry no label beyond “no statement found”. The agency’s page is linked where we could read one.
Alabama
We could not find or read an official statement for Alabama on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Motor Vehicle - Alabama Department of Revenue (Alabama Department of Revenue, Motor Vehicle Division).
Official pages we read for Alabama without finding a statement
Alaska
One related line from a US EPA rule, which speaks of one area and not of the whole state:
The June 5 submittal discontinues implementation of the I/M program for CO in the Fairbanks area.
We could not find or read an official statement for Alaska on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
Official pages we read for Alaska without finding a statement
Pages that did not open for our reader:
- Alaska Department of Environmental Conservation website (refused our reader on November 11, 2026)
- Alaska DMV website (refused our reader on November 11, 2026)
Arkansas
We could not find or read an official statement for Arkansas on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Motor Vehicle - Arkansas Department of Finance and Administration (Arkansas Department of Finance and Administration, Office of Motor Vehicle).
Official pages we read for Arkansas without finding a statement
Hawaii
We could not find or read an official statement for Hawaii on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Division of Motor Vehicles | Department of Customer Services (City and County of Honolulu, Department of Customer Services).
Official pages we read for Hawaii without finding a statement
Iowa
We could not find or read an official statement for Iowa on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Vehicle Registration & Titles | Department of Transportation (Iowa Department of Transportation).
Official pages we read for Iowa without finding a statement
Michigan
We could not find or read an official statement for Michigan on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
Official pages we read for Michigan without finding a statement
Pages that did not open for our reader:
- Michigan Secretary of State website (refused our reader on November 11, 2026)
- Michigan Department of Environment, Great Lakes, and Energy website (refused our reader on November 11, 2026)
Montana
We could not find or read an official statement for Montana on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
Official pages we read for Montana without finding a statement
Pages that did not open for our reader:
- Montana Motor Vehicle Division website (refused our reader on November 11, 2026)
- Montana Department of Justice website (refused our reader on November 11, 2026)
Nebraska
We could not find or read an official statement for Nebraska on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: New to Nebraska (Nebraska Department of Motor Vehicles).
Official pages we read for Nebraska without finding a statement
North Dakota
We could not find or read an official statement for North Dakota on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Motor Vehicle (North Dakota Department of Transportation).
Official pages we read for North Dakota without finding a statement
South Carolina
We could not find or read an official statement for South Carolina on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Moving To SC - Vehicle (South Carolina Department of Motor Vehicles).
Official pages we read for South Carolina without finding a statement
South Dakota
We could not find or read an official statement for South Dakota on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Motor Vehicle (South Dakota Department of Revenue).
Official pages we read for South Dakota without finding a statement
Tennessee
The Tennessee state site answered our requests inconsistently; the requests are listed below with what happened, and the script does not re-confirm them. No official page we could read states the current status for the whole state. The lines below are from a Tennessee General Assembly fiscal memorandum, which is a projection made on the date it prints, and from the Metro Nashville health department, a local agency.
What a legislative fiscal memorandum said and projected, with the date it prints, and what a local health department page says about its own county. Neither is a state agency statement about today:
FISCAL MEMORANDUM HB 345 - SB 576 February 20, 2023
Vehicle emissions testing in most Tennessee counties with such a program ended on January 14, 2022 upon Environmental Protection Agency's approval of a revision to the state's air quality plan.
In addition, Metro Nashville's Council recently voted to cease operations of its emissions testing program, effective February 5, 2022.
Therefore, no vehicle emissions testing programs will be in operation in FY23-24 and subsequent years.
The Metropolitan Council voted to end the emissions testing program in Davidson County.
Effective February 5, 2022, residents titling and registering a motor vehicle or renewing an existing registration no longer need an emissions test.
We could not find or read an official statement for Tennessee on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Davidson County Vehicle Inspection Program | Nashville.gov (Metro Public Health Department (Nashville and Davidson County)).
Requests to a site that answers inconsistently, with what happened when we made them. The script does not re-confirm these:
- Tennessee Department of Environment and Conservation, home page (refused our reader on most requests and opened once)
- Tennessee Department of Revenue, Vehicle registration (refused our reader on our last request)
West Virginia
The only official line we found is in a West Virginia DEP air-planning appendix whose address carries an older date. It is shown for what it is; we did not find a statement written for drivers, or a newer one.
One line from an older air-planning document, not a page written for drivers:
West Virginia does not have a vehicle inspection maintenance program and there are no state vehicle technology strategies included in the highway emissions inventory.
We could not find or read an official statement for West Virginia on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Vehicle Inspection (West Virginia Division of Motor Vehicles).
Wyoming
We could not find or read an official statement for Wyoming on whether an emissions test is required today. That describes our search on November 11, 2026, not the state’s law.
The agency’s page: Titles, Plates and Registration (Wyoming Department of Transportation).
Official pages we read for Wyoming without finding a statement
Where does that leave a driver in one of these states?
With the agency link under each state: the agency is the one that decides. If you know of an official page that answers the question for one of these states, send it to us and we will read it.