What a Smog Check Should Cost in California
The test fee is usually the smallest number in this process. The real cost swings are exemptions, retest fees, and what happens if you fail.
Written and reviewed by Nicholas Velez, Founder, Car Dogs · Updated August 14, 2026
California's smog program (run jointly through the DMV registration process and BAR-licensed test-and-repair or test-only stations) has a fairly narrow range for the test itself, but total cost depends heavily on your vehicle's age, where you test, and whether it passes the first time.
What moves the price
- Test-only versus test-and-repair stations: test-only stations can't perform repairs, which some drivers see as a built-in conflict-of-interest check, though pricing between the two varies by shop, not by station type alone.
- Vehicle type: gasoline, diesel, hybrid, and diesel-powered trucks over certain weights are tested differently, and diesel testing can carry different fees.
- Model year exemptions: many newer vehicles under a set number of model years old are exempt from the biennial test and pay a smog abatement fee instead at registration — check your DMV renewal notice for your vehicle's status.
- Retest fees if the car fails and needs a second visit after repair.
Who's exempt
California exempts gasoline vehicles for the first several model years from smog testing (verify the current cutoff on your DMV registration renewal, since the rule has changed over time), and fully electric vehicles are exempt entirely. Hybrids and plug-in hybrids with a gasoline engine are generally not exempt just for being hybrids.
Rules and exemptions change, so treat your DMV renewal notice as the authoritative word on whether your specific vehicle needs a test this cycle.
If your car fails
- Ask for the specific failed emission or system, not just "failed smog."
- Common local causes include a loose or aging gas cap, oxygen sensor failure, or a check-engine light that's been ignored — get the code read before you approve repairs.
- California's Consumer Assistance Program can help cover repair costs or offer a vehicle retirement option for qualifying low-income owners — see the BAR's website for current eligibility.
How to tell if a quote is fair
Get the actual failure printout, which lists which readiness monitors or emissions components failed. A shop quoting a repair should tie it directly to that printout, not a general "it needs work" diagnosis.
The short version
Check your DMV renewal notice first — you may be exempt. If you're not, get the failure printout before approving any repair so you're paying for the actual problem.
Common questions
- Are electric vehicles exempt from California smog checks?
- Yes, fully electric vehicles are exempt from the biennial smog inspection under California's program.
- What if I can't afford the repair to pass smog?
- California's Bureau of Automotive Repair runs a Consumer Assistance Program that can help with repair costs or vehicle retirement for qualifying vehicles and income levels — check bar.ca.gov for current terms.
Official sources
Rules and fees change. Always confirm current requirements with the agency before you file or pay.
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