The Smog Glossary

Every California smog check term and question, plainly defined

Do I need to do smog before or after I get my DMV notice?

After — your DMV renewal notice tells you if smog is needed.

renewal notice arrives 60 days before due date
smog certificate valid 90 days for renewal
skip-year vehicles get a printed reminder

Per DMV registration renewal schedule.

View in the A–Z glossary →