California smog test costs range from $30 to $80 depending on your vehicle type and test location

A standard smog inspection in California costs between $30 and $80. The exact price depends on whether your vehicle is gasoline or diesel, whether it's a hybrid, and which test station you visit. Most smog-only tests (without repairs) fall in the $40 to $60 range for a regular passenger car. Diesel vehicles and those requiring additional testing typically cost more.

The state does not set a fixed price for smog tests. Each test station owner sets their own fee, which is why you'll see variation across different locations. Some stations charge a flat rate; others charge more for diesel or vehicles over a certain age. A few stations offer discounts if you also perform repairs there, but the test itself is separate from any repair work.

You can find the current price at any station by calling ahead or checking their website. The Bureau of Automotive Repair maintains a list of licensed smog stations on their website, though it does not include pricing. Calling three or four stations in your area takes about ten minutes and can save you $20 or more.

Key Takeaways

  • Standard smog tests cost $40 to $60 for most gasoline vehicles, with diesel and specialty vehicles running $50 to $80.
  • Each test station sets its own price, so calling ahead to compare rates in your area is worth the time.
  • The test fee and any repair costs are separate charges — you pay for the test whether your vehicle passes or fails.
  • Some stations offer package pricing if you fail and need repairs at the same location, but you can take a failed test to any repair shop.

What's included in the smog test fee

The smog test fee covers the inspection itself: the technician will connect your vehicle to an emissions analyzer, run the test protocol for your vehicle's year and type, and provide you with a pass or fail result. The fee does not include any repairs, retests, or documentation beyond the smog certificate itself.

If your vehicle passes, you receive a smog certificate (also called a smog report or STAR report) that you take to the DMV or submit online when you renew your registration. If it fails, you get a detailed report showing which emissions standards your vehicle did not meet. The test station does not charge extra for the report itself — it's part of the test fee.

Some stations charge a separate fee if you need to retest after repairs. This retest fee is usually $10 to $20 and is not always included in the initial quote. Ask when you call whether the price quoted includes one retest or if retests cost extra.

Differences in cost by vehicle type

Gasoline vehicles typically cost $40 to $60 to test. Diesel vehicles usually run $50 to $80 because the test protocol is more complex and takes longer. Hybrid vehicles may cost the same as gasoline cars or slightly more depending on the station's equipment and how they classify the vehicle.

Older vehicles (generally pre-1996) sometimes cost more because they require a different test procedure called a two-speed idle test instead of the standard on-board diagnostic (OBD) test. Vehicles from 1996 onward use the OBD protocol, which is faster and more standardized. Some stations charge $10 to $20 extra for the older procedure.

Motorcycles, RVs, and commercial vehicles have their own test categories and pricing. If you're unsure which category your vehicle falls into, describe it to the station when you call — they can tell you the exact cost before you arrive.

Where to find a smog test station and compare prices

The Bureau of Automotive Repair (BAR) website lists all licensed smog stations in California by county. You can search by your zip code or city and get a list of stations near you. The list includes the station name and address but not pricing or hours, so you'll need to call or visit their website separately.

Many independent repair shops and quick-lube facilities perform smog tests. Chain locations like Jiffy Lube, Midas, and some Firestone locations also offer testing. Dealerships can perform smog tests but typically charge more than independent stations — often $80 to $100 — so they're usually not the cheapest option.

Call at least two or three stations and ask for their price on your specific vehicle type. Many stations will quote you over the phone in under a minute. Some offer online booking or price lists on their websites. If you're in a rural area with few options, the price variation may be smaller, but it's still worth confirming the fee before you drive there.

What happens if your vehicle fails the test

If your vehicle fails, you pay the test fee regardless. You then have 30 days to make repairs and return for a retest. Some stations offer a package deal where you pay a combined price for the initial test, repairs, and retest if you use their repair shop. These packages can save money, but you're not required to use the same station for repairs.

You can take your failed smog report to any repair shop, including a dealership or independent mechanic. The repair shop will fix the emissions problem and may perform a pre-test check before you return to the smog station for the retest. The retest fee is usually $10 to $20 if you return to the same station, or you can pay for a full test at a different station if you prefer.

If repairs are expensive and your vehicle is older, you may want to get a second opinion from another repair shop before committing to work. The smog report itself is free to take anywhere — there's no fee for getting a second estimate.

Timing and scheduling your smog test

Most smog stations accept walk-ins, but calling ahead or booking online can save you a wait. During peak times (late in the month when registrations are due, or in spring and fall), stations can have a one- to two-hour wait. Scheduling an appointment, even if it's just a phone call, usually gets you in within 30 minutes.

Bring your vehicle keys, vehicle registration, and proof of ownership. Some stations may ask for your driver's license as well. The test itself takes 10 to 20 minutes once you're at the station. If you fail, the technician will explain the results and hand you the report to take to a repair shop.

Plan to complete your test at least two weeks before your registration expires if you need repairs. If your vehicle fails and needs work, you'll need time for repairs and a retest before your registration important date. If you wait until the last few days, you risk not having time to complete repairs and may face a registration penalty.

Frequently Asked Questions

Can I get a smog test at the DMV?

No. The DMV does not perform smog tests. You must go to a licensed smog station, which is a separate business. After you pass the test, you take the smog certificate to the DMV or submit it online when you renew your registration.

Do I have to use the same station for repairs and retesting?

No. You can take your failed smog report to any repair shop. After repairs, you can return to the original station for a retest or go to a different station. Some stations offer discounts if you repair and retest with them, but you're never required to.

What if I just moved to California and need a smog test?

You need a smog test when you register a vehicle in California for the first time, unless your vehicle is brand new or exempt. The cost is the same as a regular smog test. Bring your out-of-state registration and proof of ownership to the smog station.

Are there any vehicles that don't need a smog test?

Yes. New vehicles (current model year and up to four years old depending on the year purchased), electric vehicles, and vehicles over 55 years old are exempt. Vehicles registered in certain low-emission vehicle programs may also be exempt. Check the BAR website or ask your smog station whether your vehicle is exempt before paying for a test.

What if my vehicle fails and repairs cost more than the car is worth?

You have options. You can explore for a Referee Test through the Bureau of Automotive Repair if you believe the test was wrong. You can also explore the state's vehicle retirement or trade-in programs if your vehicle is very old. Contact your local air quality management district for information about these programs in your area.