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Division of Air Pollution Control

Vehicle Inspection Program

Contact Air Pollution Control

Barry R. Stephens, Director
9th Floor, L & C Annex, 401 Church Street
Nashville, TN 37243-1531
(615) 532-0554
APC Contact List
Questions? Ask APC

Helpful Links

Vehicle Inspection Program Home
Williamson County CleanScreen Pilot Program
Williamson County CleanScreen Van Schedule
How To Renew Your Vehicle License
Emissions Testing Station Schedules
On-Board Diagnostics Testing Program
How To Apply For An Exemption
Important Facts To Know
Air Pollution Control Home

Questions About Vehicle Testing?

For Questions Including What To Do If You Fail Your Emissions Test:
Call the toll-free TDEC Vehicle Testing Information Hotline: 1-866-329-9632

For Questions Regarding Middle Tennessee and Hamilton County Testing Station Locations and Hours of Operation:
Call the Middle TN Envirotest Information Hotline: 615-399-8995
Or Call the toll-free Envirotest Information Hotline: 1-877-477-0800

Division Resources

APC Home
Air Quality Forecasting
Asbestos Information
EWS Landfill Monitoring (Camden)
General Information on Essex Group, Inc.
Ozone Early Action Compacts
PM 2.5
Public Participation Opportunities
Small Business Environmental Assistance Program
Vehicle Inspection Program
Visible Emissions Evaluation (Smoke School)

How to Renew Your Vehicle License

Take your vehicle to one of the official vehicle emissions inspection stations. Up to ninety (90) days prior to your vehicle's registration expiration, you can have your vehicle tested at any testing station in the five-county area regardless of where your vehicle is registered.


Once your vehicle has complied with emission testing requirements, you can renew your registration by mail or in person. You can mail or take your renewal form, your emission inspection compliance certificate, and the proper fees to your County Clerk’s office.


Davidson County

If you have a vehicle registered in Davidson County, go to Metro Public Health Department of Nashville/Davidson County, Vehicle Inspection.


Shelby County

If you have a vehicle registered in Shelby County, go to City of Memphis, Motor Vehicle Inspection Bureau.

Shelby County offers online registration.


Hamilton, Rutherford, Sumner, Williamson and Wilson Counties

Emissions Testing Station Schedules


» Hamilton County offers online registration renewal.
» Rutherford County offers online registration renewal.
» Sumner County offers online registration renewal.
» Williamson County offers online registration renewal.
» Wilson County offers online registration renewal.


Vehicle Emissions Testing Helpful Tips

Bring vehicle ID Documentation (i.e., Title or Registration)


TEST FEE $10


NO CHECKS or bills larger than $20 will be accepted.


Have the vehicle’s engine warmed to operating condition prior to testing.


Please turn off cell phones prior to entering the testing stations.


Please leave pets at home.


Extinguish smoking material before entering the testing facility.


Test early - emission tests are valid for 90 days.


Avoid testing at the end of the month.