Z1 Smog Test Only

Z1 Smog Test Only is a STAR certified test-only smog check station in Westminster, CA.

4.3(33 reviews)

14841 Dillow Street Unit #b, Westminster, CA 92683

Price

Call for price

Hours

Open Mon–Sat

Station type

Test Only

Appointments

Walk-ins welcome

STAR Certified - Authorized for directed vehicles and gross polluters

Hours

Monday
9 AM – 5 PM
Tuesday
9 AM – 5 PM
Wednesday
9 AM – 5 PM
Thursday
9 AM – 5 PM
Friday
9 AM – 5 PM
Saturday
9 AM – 4 PM
Sunday
Closed

Good to know

Languages

English

Payment

Cash, Credit Card

What to expect at Z1 Smog Test Only

Z1 Smog Test Only is licensed by the Bureau of Automotive Repair as a Test Only smog station in Westminster. It runs the inspection and issues the certificate but does no repairs. It is STAR certified, so it can test vehicles the DMV directs to a STAR station, including gross polluters.

Walk-ins are welcome. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.

What to bring

  • Your registration or DMV renewal notice

    It says whether the car needs a STAR station.

  • The car, with the check engine light off

    On a 2000-or-newer car, a lit check engine light fails the test on its own.

  • A way to pay

    The $8.25 state certificate is paid on top of the test when the car passes, unless the station's price or coupon includes it.

What if I fail?

  • Z1 Smog Test Only doesn't do repairs, so the car goes to a repair shop and comes back for the retest.
  • Each station sets its own retest price, so ask before the first test.
  • BAR's Consumer Assistance Program pays up to $1,450 toward emissions repairs for income-eligible owners.
Repair assistance (CAP)
Z1 Smog Test Only14841 Dillow Street Unit #bOpen in Maps

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14841 Dillow Street Unit #b, Westminster, CA 92683

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Nearby cities in Orange County

Midway City0.7 miHuntington Beach2.8 miStanton3.5 miFountain Valley3.7 miGarden Grove4.1 miCypress5.3 miLos Alamitos5.4 miSeal Beach5.4 mi

Questions about Z1 Smog Test Only

Z1 Smog Test Only is open Monday 9 AM to 5 PM; Tuesday 9 AM to 5 PM; Wednesday 9 AM to 5 PM; Thursday 9 AM to 5 PM; Friday 9 AM to 5 PM; Saturday 9 AM to 4 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Z1 Smog Test Only accepts Cash, Credit Card.

Z1 Smog Test Only has held a BAR smog license since 2017. You can verify the license status at bar.ca.gov.

Z1 Smog Test Only has not published a price on SmogCheckDeals. The Bureau of Automotive Repair puts the statewide average at $69.16 as of August 2026, about $65 for a 2000-or-newer vehicle and $73 for 1999-or-older, plus the $8.25 certificate fee. Call (714) 227-8253 for a quote.

Z1 Smog Test Only does not take online bookings here, but walk-ins are welcome. Call (714) 227-8253 to check the wait.

Staff at Z1 Smog Test Only speak English.

The closest alternatives in Westminster are Best Smog Test Only (0.1 mi) and DN Smog & Autocare (0.2 mi). Both are listed further up this page with their ratings and hours.

How we get this data: BAR licenses and STAR status, Google hours and ratings, coupons published by the station.

Verify this station’s license and STAR standing at bar.ca.gov.

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BAR field office: Santa Ana • Licensed since 2017

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