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What is the Difference between Emissions Testing and a Smog Check?


Emissions Testing vs. Smog Check

State and local mandated emissions testing meets the EPA Tier 2 standard, while smog testing meets California's higher standard for EPA Tier 3.

How Do I Know If I Need a Smog Test?

Your DMV registration renewal notice will indicate "Smog Check Required" if your vehicle needs a smog check.

When Is a Smog Check Required?

  • If you are selling a car or truck that is more than four years old
  • When you register an out-of-state vehicle for the first time in California, you will need a smog check
  • Every other year for vehicles that are more than six years old

When Is a Smog Check Not Required?

  • 100% electric-powered vehicles do not need a smog check
  • Motorcycles do not need a smog check
  • Got a classic car? Vehicles that are model-year 1975 and older do not require a smog check
  • Vehicles six model years and newer do not require a biennial Smog check
  • Selling your car? Cars that are four model years and newer do not require a change-of-ownership Smog check
  • Diesel-powered trucks that are model year 1997 and older
  • Diesel-powered trucks with a gross vehicle weight rating of more than 14,000 pounds

Discover More About Exhaust Repair Services At D&A Auto Repair in Roseville

Emissions And Smog Testing
Discover more about Smog Check, Testing & Repair
Inspections & Emissions


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We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!

Great customer service, very reliable, and trustworthy. They know how to get it done in a timely manner with no problem. Highly recommend them for any car service. From my experience over the past couple years haven't had any issues with them after their service. quotes-image
, 02/17/2025
reviewicon5 Star Service
Roseville, CA
Love his work!! He's reasonable, honest, and your car is in and out in a timely manner. I recommend his services to anyone who needs car repair. When, my car is sick it goes to D&A and it's all better.quotes-image
, 02/17/2025
reviewiconAmazing Service
Roseville, CA