Missouri at a glance Emissions test in some counties
| Safety inspection | Safety inspection every two years, except vehicles within 10 model years AND under 150,000 miles. Up to $12 ($10 motorcycles). |
|---|---|
| Emissions test | Emissions test in St. Louis City and St. Louis, St. Charles and Jefferson counties (Gateway Vehicle Inspection Program), generally for 1996+ gasoline and 1997+ diesel vehicles. Franklin County vehicles test only if primarily operated in the covered area. |
| Safety inspection (max) | $12 Source: Missouri State Highway Patrol MVI FAQs |
| Emissions inspection (max) | $24 Source: Missouri DOR: Additional help resources |
| Find a station / office | Gateway VIP station search |
Official sources: Gateway VIP: Does my vehicle need a test? · Missouri State Highway Patrol MVI FAQs. Checked 2026-10-04.
Counties with an emissions test (4)
- St. Louis cityRules, fee and stations
- St. Louis CountyRules, fee and stations
- St. Charles CountyRules, fee and stations
- Jefferson CountyRules, fee and stations
Everywhere else in Missouri: no emissions test for personal vehicles.
Frequently asked
Does Missouri require a vehicle safety inspection?
Safety inspection every two years, except vehicles within 10 model years AND under 150,000 miles. Up to $12 ($10 motorcycles).
Does Missouri require an emissions test?
Emissions test in St. Louis City and St. Louis, St. Charles and Jefferson counties (Gateway Vehicle Inspection Program), generally for 1996+ gasoline and 1997+ diesel vehicles. Franklin County vehicles test only if primarily operated in the covered area.
Which counties are covered?
St. Louis city, St. Louis County, St. Charles County, Jefferson County.