Arizona |
Phoenix and Tucson |
1-877-myAZcar (hotline) |
California |
Statewide |
1-800-952-5210 |
Colorado |
Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and Jefferson counties, with the exception of rural portions of Adams and Arapahoe counties east of Kiowa Creek |
(303) 456-7090 (hotline) |
Connecticut |
Statewide |
1-888-828-8399 |
Delaware |
Statewide |
(302) 744-2503 |
DC |
District wide |
(202) 727-5000 |
Georgia |
Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Paulding and Rockdale counties |
1-800-449-2471
(404) 363-7028 |
Idaho |
Boise (Ada County) |
(208) 377-9191 |
Illinois |
Only 1996-model years and newer (OBD II test) Cook, DuPage and Lake counties, including portions of Kane, Kendall, Madison, McHenry, Monroe, St. Clair and Will counties |
1-844-258-9071 |
Louisiana |
Only 1996-model years and newer (OBD II test) Ascension, East Baton Rouge, Iberville, Livingston and West Parish counties |
(225) 219-3574 |
Maine |
Out-of-state residents must contact call ahead to arrange a test. Cumberland County (Portland) |
(207) 287-2437 |
Maryland |
Anne Arundel, Baltimore City, Baltimore County, Calvert, Carroll, Cecil, Charles, Frederick, Harford, Howard, Montgomery, Prince George's, Queen Anne's and Washington counties |
(410) 537-3270 |
Massachusetts* |
Statewide for the following vehicles:
Model year 2003 and newer passenger cars, trucks and SUV
Model year 2003 and newer light-duty diesel vehicles (with a Gross Vehicle Weight Rating or "GVWR" of 8,500 pounds or less)
Model year ​2007 and newer medium-duty diesel vehicles (with a GVWR of 8,501 to 14,000 pounds)
Model year 2008 and newer medium-duty non-diesel vehicles (with a GVWR of 8,501 to 14,000 pounds)
Medium- and heavy-duty diesel vehicles (with a GVWR of 10,000 pounds or greater) not equipped with OBD systems​ (opacity test only) |
(866) 941-6277 |
Missouri |
Only 1996-model years and newer (OBD II test) St. Louis area (Franklin, Jefferson, St. Charles and St. Louis counties) |
(866) OBD-TEST
(866) 623-8378 |
Nevada |
Clark County (Las Vegas)
Washoe County (Reno) |
(702) 486-4981
(775) 684-3580 |
New Hampshire |
Only 1996-model years and newer (OBD II test) Statewide |
(603) 271-8800 |
New Jersey** |
Statewide |
(888) 656-6867
(609) 895-6886 |
New Mexico |
Albuquerque/Bernalillo County |
(505) 764-1110 |
New York |
Vehicles 25 model years old and newer in Metropolitan NYC Only 1996-and-newer model years statewide (with the exception of NYC area) |
(518) 474-8943 |
North Carolina |
Only 1996-model years and newer (OBD II test) in Alamance, Buncombe, Cabarrus, Cumberland, Davidson, Durham, Forsyth, Franklin, Gaston, Guilford, Iredell, Johnston, Lee, Lincoln, Mecklenburg, New Hanover, Onslow, Randolph, Rockingham, Rowan, Union and Wake Counties. |
(919) 707-8400 |
Oregon |
Portland-Metro Area and Rogue Valley |
1-877-476-0583 |
Pennsylvania |
25 model years old and newer: Bucks, Chester, Delaware, Montgomery, Philadelphia, Allegheny, Beaver, Washington, and Westmoreland counties 1996 model year and newer: Berks, Cumberland, Dauphin, Lancaster, Lebanon, Lehigh, Northampton, and York counties |
1-800-265-0921 |
Rhode Island |
Statewide |
(401) 222-2983 |
Tennessee |
Davidson, Hamilton, Rutherford, Sumner, Williamson and Wilson counties |
Nashville: (615) 340-5656
All others: (866) 329-9632
or 1-877-477-0800 |
Texas*** |
Brazoria, Collin, Dallas, Denton, Ellis, El Paso, Fort Bend, Galveston, Harris, Johnson, Kaufman, Montgomery, Parker, Rockwall, Travis, Tarrant and Williamson counties |
(512) 424-7293 |
Utah |
Davis, Salt Lake, Utah and Weber counties |
Davis Co. (801) 546-8860
Salt Lake Co. (801) 313-6720
Utah Co. (801) 343-4601
Weber Co. (801) 399-7141 |
Vermont |
Statewide, Only 1996-model years and newer |
(802) 828-2067 |
Virginia |
Arlington, Fairfax, Loudoun, Prince William and Stafford counties |
(703) 583-3900
1-800-275-3844 (VA only) |
Wisconsin |
Kenosha, Milwaukee, Ozaukee, Sheboygan, Racine, Washington and Waukesha counties |
(866) 623-8378 |
Ontario Canada |
Southern Ontario |
1-888-758-2999 |