Smog Stop

Smog Stop is a STAR certified test-only smog check station in Rancho Cucamonga, CA.

4.4(131 reviews)

8220 Masi Drive Unit C, Rancho Cucamonga, CA 91730

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
8:30 AM – 5 PM
Tuesday
8:30 AM – 5 PM
Wednesday
8:30 AM – 5 PM
Thursday
8:30 AM – 5 PM
Friday
8:30 AM – 5 PM
Saturday
8:30 AM – 2 PM
Sunday
Closed

Good to know

Languages

English

Payment

Cash, Credit Card

What to expect at Smog Stop

Smog Stop is licensed by the Bureau of Automotive Repair as a Test Only smog station in Rancho Cucamonga. 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?

  • Smog Stop 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)
Smog Stop8220 Masi Drive Unit COpen in Maps

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8220 Masi Drive Unit C, Rancho Cucamonga, CA 91730

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Nearby cities in San Bernardino County

Upland3.5 miOntario5.0 miMontclair7.1 miChino9.8 miFontana10.6 miBloomington12.4 miRialto12.8 miColton16.9 mi

Questions about Smog Stop

Smog Stop is open Monday 8:30 AM to 5 PM; Tuesday 8:30 AM to 5 PM; Wednesday 8:30 AM to 5 PM; Thursday 8:30 AM to 5 PM; Friday 8:30 AM to 5 PM; Saturday 8:30 AM to 2 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Smog Stop accepts Cash, Credit Card.

Smog Stop has held a BAR smog license since 2006. You can verify the license status at bar.ca.gov.

Smog Stop 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 (909) 948-0420 for a quote.

Smog Stop does not take online bookings here, but walk-ins are welcome. Call (909) 948-0420 to check the wait.

Staff at Smog Stop speak English.

The closest alternatives in Rancho Cucamonga are Quality Auto Complete Auto Repair (0.1 mi) and Mena Smog Check (1.8 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: Riverside • Licensed since 2006

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