Emissions Testing in the St. Louis Region
Notice: Vehicle owners with registrations (license plates) expiring in March and April were granted an automatic two month extension by the Missouri Department of Revenue. Please follow this link to see the Department of Revenue’s guidance regarding the extension of motor vehicle registration. Additionally, the Missouri Department of Natural Resources extended the time frame for which an emissions test is valid from 60 days to 120 days for vehicle registrations expiring in March and April. For any questions regarding vehicle emissions inspections please contact us at 314-416-2115 or 800-361-4827, or via email.
To find stations performing emissions inspections and stations employing Missouri-recognized repair technicians, click on the map.
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 ozone nonattainment area, which includes the city of St. Louis as well as Franklin, 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.
In 2016, the United States settled complaints against Volkswagen AG, et al., stemming from the company's violations of the Clean Air Act. VW sold approximately 590,000 diesel vehicles equipped with emissions defeat devices in this country. For more information on the VW Trust — such as Missouri's share of the settlement proceeds — visit the department's main VW webpage.
Inspector/mechanic training will take place from 5-9 p.m. on the second Wednesday of each month at Ranken Technical College, 4431 Finney Ave., St. Louis. The class will be in Room G108-109 of the Grey Building. Access a campus map. Look for signs on campus on the day of training.
Register for class by calling 800-832-7664 or 877-832-7664 and pressing number 3. Be prepared to provide your name, contact information, social security number, driver’s license number and the I/M number and station number, if applicable. Bring a photo ID, such as your driver's license, to receive training and take the test. You must be able to read to attend this training.
This webpage is for emissions testing only. For information about safety inspections, go to https://www.mshp.dps.missouri.gov/MSHPWeb/PatrolDivisions/DVSD/MVI/index.html.