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Smog Check Guide

STAR Smog Check in California: What It Is and When You Need One

BAR-certified higher-standard station. Voluntary certification. Two types test-only and test+repair. Required for certain DMV-directed vehicles.

  • BAR-certified higher-standard station
  • voluntary certification
  • two types Test-Only and Test+Repair
  • required for certain DMV-directed vehicles

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

DMV notice say STAR? Text us your city — most of our locations are STAR-certified and handle directed and gross-polluter retests, same day.

Do you even need a smog check?

Tap what you drive — get your answer in 10 seconds.

Common questions

What is a STAR smog check station?

BAR-certified higher-standard station. Voluntary certification. Two types test-only and test+repair. Required for certain DMV-directed vehicles.

Why does my DMV notice say I need a STAR station?

High emitter profile algorithm flagged your vehicle. 2 percent random selection in enhanced areas. Make model year mileage history factors. Only STAR cert accepted for these.

Difference between STAR and regular smog station?

STAR has higher BAR standards. Passes audit regularly. Inspector certification stricter. Equipment requirements higher.

Can I use a regular station if my notice says STAR?

No DMV will reject the certificate. STAR is required when directed. The notice will explicitly say STAR. Look for the STAR seal at stations.

How do I find a STAR station near me?

BAR locator tool at search.dca.ca.gov. Look for STAR seal on storefront. Ask the shop directly. Google STAR smog check city.

Is a STAR station more expensive?

Not automatically — BAR doesn't set a price difference between STAR and regular stations. Each shop posts its own price. Each station sets and posts its own price — there is no state-mandated STAR markup. Some vehicles are directed to a STAR station by the DMV renewal notice, regardless of price. Pricing is displayed on-site and on our services page.

What is a gross polluter?

A vehicle failing smog by more than double the limit on any tested gas. DMV requires STAR-certified station for retest. Must repair before re-inspection. GP designation logged with DMV.

Can a STAR station handle a gross polluter retest?

Yes — STAR-certified stations are required for GP and DMV-directed retests. Look for the STAR seal on the door. We are STAR-certified for this purpose. GP retest is a regulated workflow.

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