When Is My Smog Check Due in California?

Every two years for most vehicles. At sale or transfer First 8 years exempt for new cars Out-of-state imports need one

  • every two years for most vehicles
  • at sale or transfer
  • first 8 years exempt for new cars
  • out-of-state imports need one

Source: California Bureau of Automotive Repair (BAR) smog check program.

Not sure when yours is due? Text us your plate or registration date — we'll confirm your window and remind you before it lapses.

Do you even need a smog check?

Tap what you drive — get your answer and your soonest time by text. 10 seconds.

Common questions

How often do I need a smog check in California?

Every two years for most vehicles. At sale or transfer First 8 years exempt for new cars Out-of-state imports need one

When do I need a smog check for registration renewal?

Dmv notice will specify. Typically every other renewal Newer cars get abatement fee instead Star-directed vehicles need star station

How early can I do my smog before registration is due?

Up to 90 days before registration expires. smog cert is good for 90 days DMV accepts cert within this window no benefit to going earlier

How long is a California smog certificate valid?

90 days from inspection. Transmits to dmv electronically Valid for registration use Starts countdown at pass

Do I need a smog check when selling my car?

Seller responsible if over 4 years old. Must be within 90 days of sale Buyer pays smog transfer fee Exempt if same family

I just moved to California — do I need a smog check?

Yes within 20 days of residency. Out-of-state certs not accepted Vehicle must be 1976 or newer gas Diesel 1998 or newer

Do I need a smog check for a family transfer?

Exempt parent spouse child sibling grandparent grandchild. Must file dmv exemption form No certificate needed if exempt Abatement fee may still apply

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

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