Does Missouri Require a Vehicle Inspection to Register? (2026)
Yes — Missouri requires a biennial safety inspection and an emissions test in the St. Louis metro (St. Louis City, St. Louis, St. Charles, Jefferson, Franklin counties) before it will renew your registration.
Verified July 2026 from official sources. How we verify fees.
Before you renew your registration
In Missouri, your registration renewal is tied to passing an inspection. Get it done before your tags expire — the DMV won't renew without a current inspection if you live in a covered area.
The details
- Safety inspection: required every 2 years
- Emissions test: required in the St. Louis metro (St. Louis City, St. Louis, St. Charles, Jefferson, Franklin counties)
- Typical cost: safety up to $12; emissions up to $24
A biennial safety inspection is required for older/higher-mileage vehicles; emissions applies in the St. Louis metro. A 2026 repeal bill passed the House but is not yet law.
Frequently asked questions
Do I need an inspection to renew my registration in Missouri?
Yes — Missouri requires a biennial safety inspection and an emissions test in the St. Louis metro (St. Louis City, St. Louis, St. Charles, Jefferson, Franklin counties) before it will renew your registration.
Does Missouri require emissions testing?
Emissions testing is required only in the St. Louis metro (St. Louis City, St. Louis, St. Charles, Jefferson, Franklin counties). The rest of Missouri is exempt.
How much does a Missouri inspection cost?
Safety up to $12; emissions up to $24.