Do I Need a Smog Check to Sell My Car in California?

If you're selling a used vehicle in California, the seller is generally responsible for obtaining a valid Smog Check before the vehicle is sold.

For Rancho Cordova-area drivers, getting the smog inspection taken care of before meeting a buyer can make the title-transfer process much easier.

Here is what California vehicle owners should know in 2026.

Who Is Responsible for the Smog Check When Selling a Car?

In a typical private-party vehicle sale, the seller is responsible for providing the buyer with a valid smog certification when one is required.

California's Bureau of Automotive Repair also recommends giving the buyer a copy of the Vehicle Inspection Report after the vehicle passes.

This is important because agreeing that the buyer will “take care of the smog later” does not necessarily eliminate the seller's responsibility under California's transfer requirements.

How Recent Does the Smog Check Need to Be?

For a private-party purchase, California BAR says the vehicle generally must have passed a Smog Check within the previous 90 days.

Once a vehicle passes, the smog certificate is transmitted electronically to DMV and is valid for 90 days.

That means getting the inspection shortly before listing or selling your vehicle is usually the simplest approach.

I Just Smogged My Car for Registration. Do I Need Another Smog Check to Sell It?

Maybe not.

California's Smog Check Reference Guide provides an exception when a vehicle received a Smog Check certificate in connection with registration renewal and the ownership transfer occurs within 90 days of that renewal.

So if you recently passed smog, don't automatically pay for another inspection.

Check the date of your previous inspection first.

Are Newer Cars Exempt When They're Sold?

Some newer gasoline, hybrid, and alternative-fuel vehicles have a change-of-ownership exemption.

California BAR currently states that vehicles four model years and newer generally do not require a Smog Check solely for a change of ownership. Instead, California requires the applicable smog transfer fee.

This exemption is different from the rule for registration renewal.

For registration renewal, gasoline, hybrid, and alternative-fuel vehicles eight model years and newer generally do not require the regular Smog Check and are instead subject to a smog abatement fee.

Because the renewal and ownership-transfer rules use different model-year thresholds, it's easy to confuse the two.

What About Diesel Vehicles?

California's rules are different for diesel vehicles.

Diesel vehicles model year 1998 and newer with a gross vehicle weight rating of 14,000 pounds or less are generally subject to the Smog Check Program.

California BAR states there are no newer-model-year Smog Check exemptions for diesel vehicles comparable to the four- and eight-model-year exemptions available to applicable gasoline, hybrid, and alternative-fuel vehicles.

Diesel vehicles model year 1997 and older and diesel vehicles over 14,000 pounds GVWR are outside the regular Smog Check requirement described by BAR.

What About Electric Vehicles?

Fully electric vehicles do not require a California Smog Check.

Motorcycles are also exempt from the Smog Check Program.

Does a Family Transfer Require a Smog Check?

Certain transfers between immediate family members are exempt.

California BAR identifies qualifying transfers involving a person's:

• Spouse

• Child

• Grandchild

• Parent

• Grandparent

• Sibling

There are details and exceptions surrounding vehicle transfers, so owners with an unusual title situation should confirm their particular transaction with California DMV.

What If I'm Bringing a Car Into California From Another State?

That's a different situation.

A vehicle being registered in California for the first time generally requires a Smog Check, including vehicles purchased or previously registered in another state.

The inspection also helps verify that applicable emissions equipment and aftermarket components comply with California requirements.

Does the Buyer Need the Paper Smog Certificate?

The actual Smog Check certificate is transmitted electronically to DMV after the vehicle passes.

However, the seller should give the buyer a copy of the Vehicle Inspection Report.

Keeping the report is also useful if questions arise during the title transfer.

What If the Vehicle Fails Smog Before I Sell It?

A failed inspection does not produce the certificate needed for a sale that requires Smog Check certification.

Start by reviewing the Vehicle Inspection Report to determine why the vehicle failed.

Common issues can involve:

• Check engine light or emissions-related trouble codes

• Incomplete readiness monitors

• Emissions-control equipment

• Visual inspection problems

• Functional inspection problems

• Excessive emissions on applicable vehicles

After the necessary repairs are completed, the vehicle can be inspected again.

Does My Vehicle Need a STAR Station Before I Sell It?

Not every vehicle requires a STAR station.

If your DMV paperwork specifically states “Smog Certification Required at a STAR station,” the vehicle must be inspected by a STAR-certified station.

STAR stations meet additional California inspection-performance standards and are authorized to inspect directed and gross-polluting vehicles.

Smog Tech Pros is STAR Certified, so we can inspect both ordinary Smog Check vehicles and vehicles that require a STAR station.

Can I Check Whether a Used Car Has Passed Smog Before Buying It?

Yes.

California BAR provides an online vehicle inspection-history lookup.

This can be particularly useful when buying a used vehicle because you can review previous Smog Check results rather than relying solely on what the seller tells you.

A buyer should still obtain the appropriate Vehicle Inspection Report and make sure the certification satisfies the requirements for the current transaction.

Frequently Asked Questions

Can I sell a car in California without smogging it?

When a Smog Check is required for the ownership transfer, the seller is generally responsible for obtaining the certification before the sale. Certain vehicles and transfers qualify for exemptions.

Is a smog certificate good for 90 days?

Yes. After a vehicle passes, California BAR says the electronically issued Smog Check certificate is valid for 90 days.

Who pays for the smog check—the buyer or seller?

For a typical private-party sale requiring Smog Check certification, California places responsibility on the seller to obtain the required certification.

My car passed smog two months ago. Do I need another test?

Possibly not. A qualifying recent Smog Check may satisfy the transfer requirement when the transfer occurs within the applicable 90-day period.

Do cars under four years old need smog when sold?

Applicable gasoline, hybrid, and alternative-fuel vehicles four model years and newer generally receive a change-of-ownership exemption and are subject to the applicable smog transfer fee instead.

Can Smog Tech Pros perform a STAR inspection?

Yes. Smog Tech Pros is a STAR Certified Smog Check station in Rancho Cordova.

Selling Your Car? Get the Smog Check Done First

If you're preparing to sell or transfer a vehicle around Rancho Cordova, Sacramento, Gold River, Mather, or nearby communities, getting the Smog Check completed before the transaction can help avoid unnecessary DMV delays.

Visit:

Smog Tech Pros
10751 Folsom Blvd
Rancho Cordova, CA 95670
916-638-4700

No appointment necessary — walk-ins welcome.

STAR Certified

Free retest included.

Found another smog coupon in Rancho Cordova?

We will match or beat any coupon in Rancho Cordova.

Restrictions apply.