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Smog Check Guide

How Much Does a Smog Check Cost in California?

Typical range $30-$90. STAR slightly more. $8.25 certificate fee separate. Diesel/hybrid often higher.

  • typical range $30-$90
  • STAR slightly more
  • $8.25 certificate fee separate
  • diesel/hybrid often higher

Source: California Bureau of Automotive Repair (BAR) smog check program.

Pricing varies by vehicle and shop — text us for your exact out-the-door price and the soonest time at your nearest location.

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3 · Service
Why smog check prices vary

A smog check in California typically costs $30–$90. STAR stations cost slightly more, and diesel and hybrid checks are often higher. The state's $8.25 certificate fee is separate and charged only if your vehicle passes. A passing smog certificate is valid for 90 days. Price depends on vehicle type, STAR vs. regular station, test-only vs. test+repair, and location overhead.

Source: California Bureau of Automotive Repair (BAR).

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Common questions

How much does a smog check cost in California?

Typical range $30-$90. STAR slightly more. $8.25 certificate fee separate. Diesel/hybrid often higher.

Why does smog check pricing vary between shops?

Vehicle type. STAR vs regular. Test-only vs test+repair. Location overhead.

What is the $8.25 certificate fee?

State-set fee. Applies to passes only. Covers BAR electronic transmission. Not a shop markup.

Does a STAR smog check cost more than regular?

Yes typically 5-15 dollars more. STAR stations meet higher standards. BAR-certified inspectors. Extra equipment requirements.

Why do diesel smog checks cost more?

Specialized OBD equipment. Visual smoke inspection. DPF and emissions component checks. Longer inspection time.

Is the certificate fee charged if my car fails?

Only paid if passing. Failed tests have inspection fee only. Retest after repair is often discounted. No DMV submission until pass.

Are there any smog check discounts or coupons?

Yes. Every shop in the network runs a new-customer offer — mention it at your visit and it's honored right at the counter. No coupon code required — just mention the offer at the counter. Current offers for every shop are posted at calsmognetwork.com/coupons/. Walk-ins welcome; no appointment needed to use the offer.

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