How Much Does a Smog Check Cost in California? (2026 Prices)

The average smog check in California cost $69.16 in August 2026, according to the Bureau of Automotive Repair's (BAR) monthly Smog Check Executive Summary. Add the $8.25 state certificate when the car passes and the typical total is about $77.

That's the answer. The rest of this explains why the same test costs less at one shop than at the one three blocks over, and how to tell when you're paying too much.

Average smog check price by station type

BAR asks every smog check inspector to enter their inspection price once a month and publishes the averages. These are the August 2026 figures, the latest report published when this was updated. None of them include the $8.25 certificate.

The test your car gets matters too. Vehicles checked through the on-board computer (OBD, model year 2000 and newer) averaged $65.42. Older vehicles on the BAR-97 tailpipe test averaged $72.90.

Two caveats from BAR itself: stations self-report these prices, and the figures "may or may not include any discounts." Treat them as a benchmark, not a quote.

Only one number on your receipt is set by the state

The $8.25 smog certificate fee goes to the State of California, not the station. It's the same at every licensed station, and it's only charged when your vehicle passes. Fail, and no certificate is issued.

Everything else on the receipt is the station's own price. California doesn't set or cap what a station charges for the inspection. What BAR does require is an estimate, which you must authorize before the inspection begins. That estimate is the place to confirm the price, including whether the certificate is in it (BAR: Smog Check).

So when a station advertises a low price, read the fine print. Most of the time the real total is that price plus $8.25.

Why prices differ from shop to shop

The station's license type

Test-only stations inspect and certify; they can't repair. Test-and-repair stations do both. In BAR's numbers, test-only stations charged less on average than test-and-repair shops, both STAR and non-STAR. A test-and-repair shop can diagnose and fix a failure under one roof, which is worth something if your car is borderline.

The license type also changes what a technician is allowed to tell you after a failure. I dig into that in test only vs test and repair stations.

STAR certification

If your DMV renewal notice says your vehicle must be tested at a STAR station, only a STAR certified station can certify it. That narrows your choice, but not always your price: STAR test-only stations averaged $63.34, under the statewide average. Our STAR smog check guide explains when you need one.

Coupons, which are real but conditional

Discounts usually come with conditions: certain days only, 2000-and-newer vehicles only (the quicker OBD test), or no vans and trucks. Older vehicles on the BAR-97 tailpipe test take longer, which is one reason they average more.

Bring the coupon, printed or on your phone, before the station writes up the estimate. You can browse every live coupon by city on our smog check coupons page, cheapest first.

The $20 fee some people pay instead

If your vehicle is eight model years old or newer, you don't test at renewal. Instead, the DMV collects a smog abatement fee with your registration: $20 a year for roughly the first six model years and $25 a year for years seven and eight. For a registration expiring in 2026 that means $20 for 2021 and newer, $25 for 2019 and 2020, and a smog check every other year for 2018 and older. Our smog abatement fee guide has the details and the official sources.

You can't pay the abatement fee to skip a test you think you'll fail. The DMV applies it automatically by model year, and once your car ages out of the window, the test is required.

Separately, the DMV charges an $8 smog transfer fee at some changes of ownership (DMV registration fees). Different fee, different trigger.

Retests cost money more often than people expect

There is no state law requiring a free retest. Many stations offer a free or discounted retest as their own policy, usually within a set number of days and often only if the repairs were done there. That's a business decision, and it varies shop to shop.

Ask before you hand over your keys: "If it fails, what does the retest cost?" A station that gives you a straight answer is telling you something useful. If you're already looking at a failure, here's the order I'd work through it in, and if money is the problem, BAR's Consumer Assistance Program pays up to $1,450 toward repairs for income-eligible owners.

What a fair price looks like

Use BAR's averages as the yardstick:

• About $69 before the certificate is the statewide average, so about $77 all-in.
• Well under that usually means a coupon or a promotional price. Legitimate, but check the conditions.
• Well over $80 before the certificate for a routine OBD test on a passenger car is high. Not illegal, just high. Ask what it includes before you agree.

Two more things. A low posted price with a mandatory "diagnostic" add-on isn't a low price. And if a station says it can't finish the inspection without doing repairs first, get a second opinion. Failing is a legitimate outcome of an inspection.

Before you go

Call two or three stations near you, ask for the out-the-door total including the certificate fee, and ask about the retest policy in the same call.

Then find the ones that are actually close to you on the smog check near me page, and if you're curious about the car's past results, pull its record on the smog check history lookup before you spend a dollar.

Sources: BAR Smog Check Executive Summary, August 2026 · BAR: Smog Check · DMV: Smog inspections · DMV: Registration fees