Smog check for out of state cars when you move to California

The short answer

Yes. You need a California smog check to register a vehicle in the state for the first time. That covers cars you bring with you when you move, cars you buy in another state, and cars that were last registered elsewhere. The check also confirms that any aftermarket parts are legal in California.

This guide walks through who has to test, what the 49 state car rule means, the steps at DMV, the military rules, and what happens with gray market imports and odd cars that need the Smog Check Referee.

Which vehicles need the check

DMV's nonresident vehicle brochure lists the rule. A smog certification is required for gasoline vehicles from model year 1976 and newer, and for diesel vehicles from model year 1998 and newer that weigh 14,000 pounds GVWR or less. Diesel hybrids are included. Motorcycles are exempt.

The age exemptions do not carry over. A gas car that is only two model years old normally skips the renewal check. If it arrives from another state, the exemption does not apply to the first registration. The Health and Safety Code says so in section 44011(a)(4)(C)(ii).

The 49 state car trap

Not every new car on a lot in another state can be registered in California. DMV states that California residents and businesses may not bring in or register a vehicle that is less than two years old with less than 7,500 miles at purchase, unless the vehicle was built to California emission standards or qualifies for an exemption. DMV calls these cars 49 state cars, since they were built for the other 49 states.

There are exemptions on form REG 256F. If you are thinking of buying a nearly new car out of state, read that form before you pay. It is cheaper to check first than to buy a car you cannot register.

• Under two years old and under 7,500 miles. Needs California standards or an exemption.
• Older than two years or past 7,500 miles. The 49 state rule no longer applies, and the ordinary smog check does.

Step by step for new residents

1. Check that the car can be registered. Confirm the model year, the fuel and the weight. Rule out the 49 state trap.
2. Check your address. The station works from the address and ZIP code on file at DMV. If it shows an old address or program area, the station may not be able to test. Fix it first, or call the DCA Consumer Information Center at (800) 952-5210.
3. Find a station that can test your car. Use the station finder. If the car is a kit car, an engine swap or a gray market import, call the Referee first at 1-800-622-7733.
4. Get the test. A normal test takes about 30 minutes. The average price was $67.20 in 2025, plus the $8.25 certificate fee when the car passes.
5. Let the station send the result to DMV. The certificate goes to DMV electronically. Keep your report.
6. Finish your registration. Bring the other documents DMV asks for on its nonresident vehicle page.

Not sure the test applies to you at all? The main rules guide has the full list.

Imported cars and the 20 day deadline

A direct import is a car brought into California from outside the United States. DMV says registration fees on an imported vehicle are due within 20 days of entry into California. A car with no federal certification and no US emissions labels gets a title branded "NON USA." Imports need a smog check along with the other steps. Many also need the Referee.

Gray market cars

A gray market car was built for another country and brought in outside the usual maker channels. In 2025 the Referee completed 137 gray market inspections. That is a small number next to the 21,928 total Referee inspections, but these cars always need the Referee.

What a Referee does

The Smog Check Referee is run by the Foundation for California Community Colleges under a BAR contract. Referees do not do repairs. They inspect, give certificates and decide disputes. Everyone starts with a virtual appointment. Document review takes about three to five business days, and an onsite visit follows if needed. Miss a call or skip an appointment and your file is locked for 60 days.

Cases at the Referee fail often. Referee stations failed 71.8 percent of the newer cars they tested in 2025, compared with 7.8 percent at all stations. That is because the Referee sees problem cases.

How the Referee works for new arrivals

BAR counted 35 Referee stations in its 2025 annual summary. Most are in enhanced areas. BAR's September 2026 report counts 40. The Referee site says they sit on community college campuses around the state, and appointments are assigned by the call center. We did not find a public list of addresses, so call before you drive anywhere.

In 2025 the Referee issued 3,841 certificates of compliance. It also granted 550 repair cost waivers, but a waiver cannot be used on a first registration. On the other side of the ledger, a certificate of compliance is the paper that lets a hard case reach registration. Onsite payment is by Visa or Mastercard only.

Plan for time. The virtual review takes about three to five business days, and an onsite inspection comes after that. If you are moving on a deadline, call early.

If you are buying a car in another state

• Ask for the model year, mileage and fuel before you pay. They decide whether the 49 state rule and the smog check apply.
• Ask whether the car was built to California standards. A car that was not built to them and is under two years old with under 7,500 miles cannot be registered here without an exemption.
• Ask about modifications. Aftermarket parts must be California legal, and the smog check confirms it. Modified software fails the test unless it has a CARB Executive Order.
• Budget for the test. It costs about $67.20 on average plus the $8.25 certificate fee. A failed car means repairs at a licensed station.
• Do not count on a waiver. It is not allowed on this first registration.

Military members

There is no military exemption. An active duty service member who registers a car in California for the first time needs a smog check like anyone else.

A separate rule covers cars that are not registered in California but are driven in the state by active duty personnel. Federal law requires a smog inspection for them. Each base enforces it, usually by asking for a passing report before it issues a base sticker. Ask your base registration office what it accepts.

Why there is no waiver on first registration

The repair cost waiver lets an owner postpone a smog requirement after spending at least $650 on repairs. Health and Safety Code section 44015(d)(2) bars the waiver on the initial registration of out of state vehicles, direct imports, dismantled vehicles, engine changed vehicles, alternate fuel vehicles and specially constructed vehicles. Your car has to pass.

State repair help is limited too. The Consumer Assistance Program covers cars that failed a biennial check, not a first registration. That makes the smog check at the start the one to plan carefully.

If your out of state car fails

1. Read the vehicle inspection report. It lists the reasons and any open safety recalls.
2. Ask about warranties. California certified cars carry emissions coverage of 3 years or 50,000 miles on any smog check failure, 7 years or 70,000 miles on high priced parts, and 15 years or 150,000 miles for PZEVs. Federal coverage is 2 years or 24,000 miles, with 8 years or 80,000 miles on the catalytic converter and engine computer.
3. Repair and retest. Fix the problem at a licensed repair station, then retest. Unless a STAR notice applies, any station can do the retest.
4. Use the Referee for special problems. Aftermarket parts, engine changes and missing labels are Referee business.

Common causes of failure in general are a check engine light that is on, monitors that are not ready after a battery change, modified software, and an aftermarket or wrong catalytic converter. Our guide on failed smog checks covers the options in depth.

The test your car will get

A 2000 or newer gas or hybrid car, and a 1998 or newer diesel, takes the on board diagnostic test. It checks the car's computer and does not use a tailpipe probe. A 1976 to 1999 car gets a tailpipe test, and in enhanced areas most of them ride a dynamometer. Cars from 1976 to 1995 also get extra checks on the EGR system, ignition timing, fuel cap and fuel vapor system.

Which program area applies depends on the registration address. See the area guide. If you are moving into one of the rural counties, the first registration is the main time a smog check will come up.