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If you own a car in California, staying compliant with smog check requirements is essential. The state enforces strict emissions standards to reduce pollution, and most vehicles must undergo regular smog testing.

At EZ Smog Check, we specialize in quick, efficient smog inspections to help you stay road-legal. Here’s everything you need to know about how often you need a smog check in California.

How Often Do You Need a Smog Check?

The California Department of Motor Vehicles (DMV) requires most vehicles to undergo a smog check every two years (biennial inspection) before renewing registration. If your vehicle needs a smog check, the DMV will notify you on your renewal notice.

Vehicles That Require a Smog Check Every Two Years:

  • Gasoline-powered vehicles model year 1976 and newer
  • Diesel vehicles model year 1998 and newer with a GVWR of 14,000 lbs or less
  • Hybrid vehicles
  • Natural gas-powered vehicles under 14,000 lbs

Smog checks ensure that your vehicle meets California’s emissions standards, keeping the air clean and your car compliant.

When Else Do You Need a Smog Check?

1. When Selling a Used Vehicle

If you’re selling a vehicle that’s more than four years old, you must provide the buyer with a valid smog certificate. The certificate is valid for 90 days from the test date.

2. When Registering an Out-of-State Vehicle

Bringing a vehicle from another state into California? You’ll need to pass a smog check before it can be registered.

3. If Your Car is Flagged as a Gross Polluter

If your car emits excessively high levels of pollution, it may be labeled a Gross Polluter. These vehicles must undergo testing at STAR-certified stations like EZ Smog Check and may require repairs before passing.

Smog Check Exemptions

Not all vehicles require a smog test. Your car is exempt if it falls into one of these categories:

  • Newer vehicles (exempt for the first eight model years)
  • Electric vehicles (EVs)
  • Gasoline vehicles model year 1975 and older
  • Diesel vehicles model year 1997 and older
  • Motorcycles

If your vehicle qualifies for an exemption, the DMV will indicate it on your renewal notice.

What to Expect During a Smog Check

When you bring your vehicle to EZ Smog Check, our certified technicians will:

  1. Inspect your emissions system – Checking for proper function.
  2. Run an On-Board Diagnostics (OBD) test – Scanning for error codes that indicate potential emissions issues.
  3. Conduct a tailpipe emissions test (if applicable) – Older vehicles may require a direct emissions test.

If your car passes, we’ll electronically submit the results to the California DMV, allowing you to renew your registration. If it fails, we’ll provide a detailed report with recommended repairs.

Why Choose EZ Smog Check?

  • Fast & Efficient Testing – Most tests take just 15-20 minutes
  • Affordable Pricing – No hidden fees, just honest service
  • STAR-Certified Station – Meeting all smog test requirements
  • Convenient Location – Easy access for Torrance & surrounding areas

Visit EZ Smog Check Today

Don’t wait until the last minute—ensure your vehicle meets California smog check laws by stopping by EZ Smog Check today.

Keeping your car compliant is easy with EZ Smog Check—your trusted smog testing station.