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 andHours of Operation:
Call the Middle TN Envirotest
Information Hotline: 615-399-8995
Or Call the toll-free Envirotest
Information Hotline: 1-877-477-0800
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 Clerks office.
If you have a vehicle registered in Davidson County, go to Metro Public Health Department of Nashville/Davidson County, Vehicle Inspection.
» 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.
Bring vehicle ID Documentation (i.e., Title or Registration)
TEST FEE $9
NO CHECKS or bills larger than $20 will be accepted.
Have the vehicles 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.
If your battery has recently been disconnected or serviced, your vehicle’s OBD system may not be ready for an emissions test.