Emissions Testing in the St. Louis Region
Effective July 1, 2022, vehicles registered in Franklin County no longer need an emissions inspection for vehicle registration. On Jan. 27, 2022 the Missouri Air Conservation Commission adopted an amendment to 10 CSR 10-5.381 “Onboard Diagnostics Motor Vehicle Emissions Inspection.” 10 CSR 10-5.381 identifies which vehicles are subject to emissions testing requirements and the amended regulation exempts vehicles registered in Franklin County from emissions inspection requirements. Vehicles registered in the City of St. Louis, and the counties of St. Charles, St. Louis and Jefferson are still subject to emissions inspection requirements. Further details for Franklin County motorists and inspection stations is available on the Gateway Vehicle Inspection Program Frequently Asked Questions - Termination of Vehicle Emission Testing Requirements for Franklin County Residents fact sheet.
If you have questions or concerns, please reach out to:
The Gateway Vehicle Inspection Program: Phone: 314-416-2115, Email: firstname.lastname@example.org
Or the Air Pollution Control Program: Phone: 573-751-4817, Email: email@example.com
The Gateway Vehicle Inspection Program (GVIP) improves air quality in the St. Louis region. GVIP is an emissions testing program for vehicles registered in the St. Louis area, which includes the city of St. Louis as well as Jefferson, St. Charles and St. Louis counties. If you have questions or concerns — including what to do if your vehicle fails the inspection — please contact department staff at 314-416-2115.
- Ozone information
- Malfunction indicator lamp (check engine light)
- Importance of GVIP
- History of GVIP
- Emissions test procedure
- Fact sheets and FAQs
- Annual GVIP reports
- Vehicle Emission Inspection Regulations (10 CSR 10-5.381)
- Vehicle Emission Inspection Statutes (643.300 to 643.355)
- Click here to get updates on the GVIP Program.
This webpage is for emissions testing only. For information about safety inspections, go to the Missouri State Highway Patrol Motor Vehicle Inspection webpage.