Does Mississippi Have Emissions Testing?

No, Mississippi does not require emissions testing. The state has never implemented a vehicle emissions testing program.

Mississippi's Emissions Testing Policy

According to the Mississippi Department of Revenue, the state does not require emissions testing for motor vehicles as a condition of registration. Vehicle registration in Mississippi does not require any emissions test certificates or inspection documentation.

This policy applies uniformly across the state:

• No counties require emissions testing
• No cities or municipalities have local emissions requirements
• All vehicle types are exempt from emissions testing requirements
• No testing is required for initial registration or annual renewal