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County Clerk Lisa Duke Crowell
Elected Official

Murfreesboro
319 N Maple St.
Suite 121
Murfreesboro, TN 37130
Phone: (615) 898-7800
Fax: (615) 898-7830
8AM - 4PM Monday-Thursday
8AM - 5PM Friday

Smyrna
205 I St.
Smyrna, TN 37167
Phone: (615) 459-9692
Fax: (615) 355-4118
8PM - 4PM Monday-Thursday
8AM - 5PM Friday

Eagleville
Eagleville City Hall
108 S. Main St
Eagleville, TN 37060
(615) 274-2922
Open the first working
day of each week,
8AM - 4PM
Office building closing one hour for lunch 12PM-1PM

Emissions Testing


Inspection LocationsExemptionsFailed Test

About Emissions Testing

Take your vehicle to one of the official vehicle emissions inspection stations, and bring your title and/or vehicle registration documentation. You can have your vehicle tested at any testing station regardless of where your vehicle is registered.

Fees are $10.00 cash, credit and debit cards. No bills larger than $20 accepted.

**Effective, July 1, 2014 the emissions test will change to $9.00.

Once your vehicle has satisfied the test requirements, you can renew your registration online or in person. You can mail or take your renewal form, your emissions compliance certificate, and the proper fees to the Office of the Rutherford County Clerk.

Emissions tests are valid for 90 days.

Safety Considerations – Your vehicle may not be tested if:

It has fuel, oil, or coolant leaks
It has visible smoke It has excessive exhaust leaks

The idle is not set to factory specifications

It doesn't have catalytic converter(s)

The inspector would have to reach more than elbow's length under the vehicle to insert the sampling probe.

Helpful Tip: Always have the vehicles engine warmed to operating condition prior to testing To avoid potential long wait times, avoid testing at the end of the month and on Tuesdays.

New Testing Requirements

Beginning April 1, 2005, two new classes of motor vehicles must pass an emissions test before they can be registered in Davidson, Rutherford, Sumner, Williamson or Wilson Counties.The vehicles subject to testing are:

Gasoline-powered vehicles 1975 and newer with a gross vehicle weight 10,500 pounds or less; previous limit was 8500 pounds; weight information is located on the vehicle's door jam.
Diesel-powered vehicles 1975 and newer with a gross vehicle weight 10,500 pounds or less; diesel vehicles were not previously inspected.

While the majority of diesel and gasoline powered vehicles will be subject to testing, electric cars, motorcycles and antiques are among a limited group of exempt vehicles. For more information, please call (615) 399-8995 or visit the web site.

Light-duty motor vehicles are major sources of air pollution that leads to smog, or ozone. Vehicle inspection programs reduce ozone, a major public health hazard. The Tennessee Air Pollution Control Board's new rules are designed to improve air quality by expanding the testing of motor vehicle emissions in Middle Tennessee.

Most motorists have easy access to specially designed, high-volume inspection stations within five miles of their home, or along their normal daily commute. The Middle Tennessee vehicle inspection program began in 1985; it eliminated nearly 70,000 tons of pollution from 1996-2002.


Inspection Locations in Rutherford County

Murfreesboro Vehicle Emissions Inspection
1211 Salem Park Court
Murfreesboro, TN

Hours of Operation


7:00 AM - 6:00 PM Monday and Tuesday
7:00 AM - 5:00 PM Wednesday through Friday
8:00 AM - 1:00 PM Saturday
Closed Sunday

Smyrna Vehicle Emissions Inspection

Weakley Lane (across from BetterBuilt Aluminum)

Smyrna Hours of Operation

7:00 AM - 6:00 PM Monday and Tuesday
7:00 AM - 5:00 PM Wednesday through Friday
Closed Saturday and Sunday


Vehicle Emissions Testing Exemptions

All vehicles are required to complete Vehicle Emissions Testing except as follows:

If vehicle was built in 1974 or before.
If vehicle has a GVWR greater than 10,500 lbs.
If exemption exists, owner must complete and sign a Inspection Exemption Form. Please visit How To Apply For A Vehicle Exemption for additional information and click here to download the current form.

If vehicle is out of emissions testing area when tags expire. In such circumstances, the State offers a temporary exemption for vehicles that fall into this category. The first step is to fill out the Application for Vehicle Exemption and return it to the address shown below. Please do not return this application to the clerk's office. The Division will review your application for completeness. If the vehicle qualifies, a Certificate of Exemption will be mailed approximately 60 days before the tags expire. This certificate will be a substitution for having the vehicle tested at this time. The exemption must be submitted to the clerk's office upon renewal of the vehicle's registration. When the vehicle returns to the emissions testing area, it must be taken to one of the testing centers for an emissions test. Mail the testing Certificate of Compliance to the following address:

Division of Air Pollution Control
Mobile & Air Resources Management Program
401 Church St. L & C Annex 9th Floor
Nashville, TN 37243

If you have any questions, please do not hesitate to call (615) 532-0534 or the testing Hotline (615) 532-TEST.


Failed Emissions Testing

Thirty-Day Grace Period

Tennessee Code Annotated 55-4-128 statesÖThe owner of any motor vehicle who resides in any county in which the issuance or renewal of the certificate of registration, or any registration plates issued pursuant to chapters 1-6 of this title or a city or county vehicle inspection sticker, for such motor vehicle depends upon the successful completion of a motor vehicle emissions test, shall be:

Given a grace period of thirty (30) days from the date fixed for issuance or renewal in which to effect necessary repairs and successfully complete the emissions test administered prior to the date fixed for issuance or renewal, and repairs necessary to pass such test cannot be effected prior to such date;
Issued an inspection certificate by the motor vehicle emissions testing authority which shall state on its face the date the emissions test was administered and failed, and that a thirty-day grace period shall apply to such motor vehicle; and
The owner of any motor vehicle which did not successfully complete an emissions test administered prior to the date fixed for issuance or renewal and, after attempting the repairs necessary to successfully complete the emissions test fails the emissions testing again, shall be eligible to apply for a waiver from further emissions testing for that year; provided, that the owner has attempted repairs to the vehicle in an amount of six hundred and fifty dollars ($650.00) or more for model year 1996 and newer, two hundred dollars ($200) or more for model years 1981 - 1995, or seventy-five dollars ($75.00) or more, if the vehicle is of a model year 1980 or older, or has attempted repairs in such amount as established by the environmental protection agency to make the owner of a motor vehicle eligible for a waiver, whichever is less. The waiver shall be granted according to guidelines and procedures established by the air pollution control board.

Possession of a duly authorized inspection certificate issued pursuant to subsection (a) shall be deemed possession of a valid certificate of registration, registration plate, and inspection sticker for the duration of the authorized grace period provided by subsection (a).

Diagnostic Information

The owner of any motor vehicle who resides in any county in which the issuance or renewal of the certificate of registration, or any registration plates issued pursuant to chapters 1-6 of this title, or a city or county vehicle inspection sticker, for such motor vehicle depends upon the successful completion of a motor vehicle emissions test, shall Diagnostic Information

Most vehicles can pass with minor, inexpensive repairs. Listed below are some helpful hints:

Commission causes for high hydrocarbons (HC) include: Vacuum leaks, ignition system malfunction, faulty computer controls, air injection system failure, incorrect engine timing, incorrect engine idle speed, improper fuel injector operation, and low compression in one or more cylinders, incorrect carburetor setting/adjustment, and inoperative/missing catalytic converter(s).
Commission causes for high carbon monoxide (CO) include: Dirty/clogged air cleaner, choke or carburetor malfunction, fuel injector operation, air injection system failure, carburetor float level maladjusted, incorrect carburetor settings/adjustment, inoperative/missing catalytic converter, defective evaporative system, and faulty computer controls.

Note: Most 1981 and newer vehicles have computer-controlled systems utilizing an oxygen sensor in the exhaust. A qualified technician should determine the cause of any failure. Diagnosis and troubleshooting of your vehicle's computer systems by anyone other than a qualified technician could result in damage to the system.

When returning for a retest, drive the vehicle for 15 to 20 minutes before arriving at the test station to ensure the engine is at normal operating temperature. If there is a line at the station, do not turn the engine off while waiting.

Emissions Equipment

During the emission inspection just conducted on your vehicle, one or more factory installed emission control items were found missing, disabled or altered. Listed below is information, which may help you or your mechanic understand the required repairs:

Catalytic converter(s) is missing. A catalytic converter(s) of the correct type and configuration must be installed. You or the person returning the vehicle to the inspection station must present the converter(s) WARRANTY CERTIFICATE and the failed inspection report to the vehicle inspector. If the replacement converter is a manufacturer's original equipment model, only an invoice or receipt is needed.
Catalytic converter(s) is disabled or altered. The catalytic converter(s) must be replaced or repaired to the correct type and configuration and be welded or professionally clamped in place.
Fuel filler restrictor exceeds allowable diameter. A USEPA approved filler restrictor must be installed. Additionally, the catalytic converter(s) may have to be replaced as described in #1 above.
The fuel cap is missing or does not seal properly. To prevent fuel or vapor leakage, the correct type fuel cap must be installed.

Questions Hotline (615) 532-TEST