Federally Mandated Emissions Testing Information
For Hamilton County Residents

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Emissions Testing is a State air pollution project mandated by the Federal government to increase air quality.  The County Clerk’s office is related only in that the law requires motorists to pass the test prior to registering. 

Direct all questions about testing to TDEC Vehicle Testing Information Hotline: 1-866-329-9632.
 

All About Vehicle Inspection Programs In Tennessee

Inspection Station Hours and Holiday Closing Information

Fact Sheet--Vehicle Emissions Testing for Hamilton County

Emission Exemption Application