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The Daily Insight

What is a biennial smog certification?

Author

John Hall

Updated on February 23, 2026

What is a biennial smog certification?

For counties requiring a smog inspection, the CA Department of Motor Vehicles employs a biennial smog certification program. This means that your qualifying vehicle must undergo a smog check every two years. Your registration renewal reminder should indicate whether it’s time for your smog inspection.

What is PFR sticker?

The PFR program is designed to simplify fleet vehicle registration for owners of large fleets: Vehicles are issued permanent license stickers, weight decal PFR stickers, and registration cards showing the month of expiration.

What is a California permanent fleet sticker?

Permanent Fleet Registration Service CAL AUTO LICENSE offers a program called Permanent Fleet Registration that can be valuable tool for companies to manage a fleet with at least 25 vehicles. Any motor vehicle can be included (except motorcycles) that display the company logo or CA Number.

How many days can you drive with expired inspection sticker?

If your vehicle inspection expires, you can legally drive your vehicle to an inspection station within 10 days of the expiration, only if you have booked an appointment at the station and can prove you are driving there. Otherwise, you cannot drive the vehicle.

Does a 30 year old car need smog in California?

All vehicles that are model-year 1975 and older do not require a Smog Check.

Can I drive my car without smog check?

With that said, you have time to get the smog check until the end of your current registration expiration period, except you can’t legally drive your vehicle on public roadways unless you get a temporary operating permit (TOP).

Why are some California registration tags different?

The difference is the 4-digit version has the random serial numbers on the sticker that CA DMV has always used. The 2-digit stickers are issued by the self-serve renewal vending machines at the DMV offices. Every other method of renewal uses the 4-digit stickers.

What color is the 2020 tags?

Green expires 2020, Yellow in 2021. Colors change every year to a color that is easy to tell the difference from the previous year. It might go from red to green, then yellow, then blue and back to red again.

How long can you drive on expired tags in California?

If you continue driving with expired tags for over 6 months, your vehicle can be impounded under California Vehicle Code § 22651(0)(1).

How can I get permanent registration?

The application for obtaining a permanent registration number for the vehicle. This can be done by submitting Form 20. The Sales Certificate which states all the details of the sale of the vehicle. This can be submitted via Form 21.

What happens if you get pulled over with expired inspection?

Driving With Expired Inspection Sticker/No Sticker: If the inspection sticker on your vehicle has expired in the past 60 days, you can receive a fine of $25 to $50. If the inspection sticker is expired more than 60 days, the fine is between $50 and $100.

Can you get towed for expired inspection?

Yes, Non inspection can mean an unsafe car, and the officer can have it towed as he is charged with public safety.