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How much is a smog check in California​?

Ideally, it will cost you between $30 and $80 for a smog check in California, plus an additional fee of $8.25 for smog certification. The total cost of a California smog check will stay below $100, depending on your vehicle type, location, and whether your vehicle needs a STAR station for registration renewal.

What is done during a smog check in California?

California state law mandates a smog check to help reduce air pollution. During the check, a technician inspects your vehicle’s emissions system to ensure it fulfills the state standards. These are the common steps that a technician follows.

  • Visual check of the emissions control system.
  • Functional check of the emissions control system.
  • Checking the on-board diagnostic system (newer cars or vehicles registered after the year 2000)
  • Tailpipe emissions test (for vehicles registered before the year 2000)

What are the factors affecting the cost of a smog check in California?

  • Vehicle type: The type of vehicle you own greatly affects the cost of the test. For instance, the cost can increase if you own a diesel vehicle rather than a gasoline vehicle.
  • Location: The cost can vary depending on the location where you take the test. The cost can be higher in big cities like California or Los Angeles.
  • Test types: The type of test that your vehicle requires can affect the cost. For instance, the cost will be higher if the test is conducted at a STAR station rather than a regular smog check.
California smog check
Image by Nomad_Soul/Shutterstock

How long is a smog check good for in California?

Ideally, a California smog check certificate is good for 90 days from the date of issue. If you don’t register your vehicle within 90 days, your vehicle must undergo a new inspection.

How often do you need a smog check in California?

Most vehicles need to renew their smog certification every two years. Newer vehicles (eight model-years or less) don’t need to renew it every two years, but instead pay a yearly smog abatement fee.

How to make your vehicle ready for a smog check

Follow these to keep your vehicle in the best condition for a smog check.

  • Change the oil and air filters often.
  • Check your vehicle’s tire pressure.
  • To clean the engine, add fuel additives.
  • Drive your car for around 20 minutes to warm it up before the test.

What happens if you fail the smog check in California?

You won’t be able to renew the smog certification if you fail the test, but you won’t have to pay the smog certification fee. On failing the test, you will get a Vehicle Inspection Report (VIR) explaining the problems with the vehicle.

To fix this, you must complete the necessary repairs, retest your vehicle, and then apply for state assistance or a temporary permit if required, as summarized by the Bureau of Automotive Repair.

Gerard Stevens

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