Heres a list of states the have or have not emission testing. It does not say if motorcycles are exempt from testing
Summary of Periodic Inspection Requirements for Non-Commercial Vehicles[edit]
State Periodic Safety Inspections Periodic Emissions Inspections
Alabama no no
Alaska no no
Arizona no biennially for Phoenix and Tucson metros
Arkansas no no
California no biennially for cars from out-of-state or in-state cars 7+ years old in all or some zip codes in 41 of 58 counties
Colorado no biennially in all or parts of 9 out of 64 counties, except for vehicles 7 model years old and newer
Connecticut no biennially
Delaware biennially biennially
District of Columbia biennially biennially
Florida no no
Georgia no annually for Atlanta metro
Hawaii annually no
Idaho no yes for Ada and Canyon counties
Illinois no (not actively checked, see above) biennially for Chicago and St. Louis metros
Indiana no biennially for Lake and Porter counties
Iowa no no
Kansas no no
Kentucky no no
Louisiana annually*/biennially annually for Baton Rouge metro
Maine annually annually for Cumberland county only
Maryland no biennially for 13/23 counties and Baltimore
Massachusetts annually annually
Michigan no no
Minnesota no no
Mississippi biennially no
Missouri biennially biennially for St. Louis metro
Montana no no
Nebraska no no
Nevada no yes for Clark and Washoe counties
New Hampshire annually annually (Model Year 1996 and Newer Only)
New Jersey no biennially
New Mexico no biennially for Bernalillo county only
New York annually annually
North Carolina annually annually for 48/100 counties
North Dakota no no
Ohio no odd/even for Cleveland metro
Oklahoma no no
Oregon no yes for Portland and Medford metros
Pennsylvania annually annually in 25 of 67 counties
Rhode Island biennially biennially
South Carolina no no
South Dakota no no
Tennessee no annually for select Nashville counties/Chattanooga area
Texas annually annually for large urban areas
Utah biennially yes for four most populated counties
Vermont annually annually
Virginia annually biennially for urban and suburban northern Virginia
Washington no yes for urban areas of select counties
West Virginia annually no
Wisconsin no biennially for select counties
Wyoming no no
- New Orleans requires a "brake tag". In addition to the state requirements, if your vehicle is registered in New Orleans, you must also have the brakes tested annually with a short stop test.