How much is a smog check in California?
A smog check in California costs about $69.66, before the $8.25 state certificate fee that every station adds, so plan on about $78 out the door. That average comes from the Bureau of Automotive Repair’s September 2026 report, which covered 897,082 smog checks. The spread is real, though: test-only stations averaged $56.77, while shops that also do repairs averaged $75.26. California doesn’t set the price, so the station on your corner can charge more or less. Here’s what moves it.
Smog check prices by type of station
BAR asks every Smog Check inspector to report what they charge once a month, and publishes the averages. These are the September 2026 numbers, with the certificate fee added in the last column.
| Station type | Smog checks in September 2026 | Average inspection cost | With the $8.25 certificate |
|---|---|---|---|
| Test-only (not STAR) | 36,479 | $56.77 | $65.02 |
| STAR test-only | 510,785 | $63.30 | $71.55 |
| STAR test-and-repair | 238,473 | $71.80 | $80.05 |
| Test-and-repair (not STAR) | 111,345 | $75.26 | $83.51 |
| All stations | 897,082 | $69.66 | $77.91 |
Source: BAR Smog Check Executive Summary Report, September 2026. BAR notes that these are self-reported, may or may not include discounts, may not reflect the actual cost, and that its BAR-97 software can’t take entries above $99.
Where do most people go? STAR test-only stations. They did more than half of all smog checks in September, at $63.30 on average.
Why one station charges more than another
Three things, mostly.
The station type. A test-only station does nothing but test, and in BAR’s figures it charges the least. A test-and-repair shop can fix the car on the spot if it fails, and its tests average about $18.49 more.
The age of the car. Most 2000 and newer cars are checked through the on-board diagnostic port, which BAR’s report puts at $66.42 on average. Older cars get a tailpipe test on BAR-97 equipment, which averaged $72.90.
The station itself. Prices aren’t regulated, so the price can change from one station to the next, even in the same town, and smog check coupons are everywhere. Whatever the deal, ask for the out-the-door price with the certificate included, so you’re comparing like with like.
The $8.25 you can’t avoid
Every station has to charge the $8.25 Smog Check certificate fee on top of its own price. It’s the only part of the bill California sets. Buying from a dealer? The DMV lets a dealer charge a buyer up to $50 for the emissions test, plus the certificate fee.
STAR station or regular station
Check your renewal notice. If it says "Smog Certification Required at a STAR station", you need a STAR station; if it just says "Smog Certification Required", any licensed station will do. STAR stations meet higher performance standards and can test every vehicle, including high-polluting ones. The difference in price is small at test-only stations: STAR test-only averaged $63.30 in September, about $6.53 more than a regular test-only station.
When you need one
Most gasoline and hybrid cars need a smog check at every other renewal, when they’re sold, and when they’re first registered in California from another state. A quick way to work out your first one, from BAR: add eight to the model year. The full rules, and the $20 smog abatement fee newer cars pay instead, are in the California registration guide.
What happens at the smog station
The inspector looks over the emissions control system, checks that its parts work, and then either plugs into the on-board diagnostic port (most 2000 and newer cars) or runs a tailpipe test (older ones). BAR puts the whole thing at about 30 minutes.
And most cars pass. In September 2026, 91.33% of initial smog checks ended with a certificate. But if your check engine light is on, BAR’s advice is simple: get it repaired before the test.
If your car fails: repair help, or $1,350 to $2,000 to retire it
California’s Consumer Assistance Program, run by BAR, offers two ways out.
- Repair assistance. Up to $1,450 toward emissions repairs on a 1996 or newer car, or up to $1,100 on a 1976 to 1995 car. You pay 20% of a repair bill of up to $1,812.50 on a newer car ($1,375 on an older one). Above that, you pay everything beyond the program’s share.
- Retirement. $1,350 to scrap a car that failed its most recent smog check, with no income test. Households that meet the income limit can get $1,500, or $2,000 if the car failed.
Sources: BAR, CAP repair assistance; BAR, CAP vehicle retirement.
Smog check cost in Nevada
Nevada does set a ceiling. For 2026 its DMV caps an emissions test on a light-duty gasoline car at $75.50 in Clark County (Las Vegas), $68.50 for the test plus the $7 certificate, and $71.50 in Washoe County (Reno). Stations that also renew your registration can charge up to $10 more for that. New cars are exempt until their fourth registration, hybrids for five model years, and a passing test is good for 90 days.
Source: Nevada DMV, emission control program.
Other states call it an emissions test, and the price is often set by the state. Every state’s fee and schedule is on the car inspection cost by state page.
Questions people ask
How much should a CA smog test cost?
About $69.66 on average, going by the Bureau of Automotive Repair’s September 2026 report, plus the $8.25 certificate fee every station has to charge. Test-only stations come in cheaper, around $56.77 to $63.30, and shops that also do repairs average more. A quote far above $83.51 out the door is worth comparing against another station.
Will CA give you $1200 if your car doesn't pass smog?
The real figures are a little higher. Through the Consumer Assistance Program, California pays $1,350 to retire a car that failed its last smog check, with no income test, or $1,500 or $2,000 if your household income qualifies. If you would rather fix it, the same program pays up to $1,450 toward repairs on a 1996 or newer car, with a co-payment.
Is California smog every 2 years?
For most gasoline and hybrid cars, yes: a smog check comes due at every other renewal, and the DMV renewal notice tells you which year. Two other moments trigger one, too, when the car is sold and when it is first registered here from another state. Which cars skip it is covered in our California registration guide.
What does a STAR smog check mean?
STAR stations meet higher performance standards set by the Bureau of Automotive Repair and can inspect every vehicle, including the high-polluting ones the state directs to them. The program started on January 1, 2013, replacing the old Gold Shield and Test Only labels. If your renewal notice says "Smog Certification Required at a STAR station", only a STAR station will do.
Why is a smog check so expensive?
Because nobody caps the price. The state sets only the $8.25 certificate fee, and each station charges what it likes for the test itself. Shops that also do repairs average about $18.49 more than test-only stations, and older cars that need the tailpipe test cost about $6.48 more than ones checked through the diagnostic port.
How long does a CA smog test take?
About 30 minutes for the inspection itself, according to the Bureau of Automotive Repair. Add whatever wait there is for a free bay, which is why some people book ahead. Most 2000 and newer cars are checked through the on-board diagnostic port, and older ones get a tailpipe test. Bring the renewal notice if you have it.