Oc Smog Lab

Yes. Oc Smog Lab is licensed as a Test Only smog station. This station performs the smog test and issues the certificate. It does not do repairs, so a failed vehicle has to be fixed elsewhere and brought back.

Oc Smog Lab is open Monday 8 AM to 6 PM; Tuesday 8 AM to 6 PM; Wednesday 8 AM to 6 PM; Thursday 8 AM to 6 PM; Friday 8 AM to 6 PM; Saturday 8 AM to 3 PM; Sunday 11:30 AM to 2:30 PM. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Oc Smog Lab accepts walk-ins, so you can drive in without booking ahead.

Oc Smog Lab accepts Cash, Credit Card.

Oc Smog Lab has held a BAR smog license since 2026. You can verify the license status at bar.ca.gov.

Oc Smog Lab 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 (323) 592-9360 for a quote.

Oc Smog Lab does not take online bookings here, but walk-ins are welcome. Call (323) 592-9360 to check the wait.

Staff at Oc Smog Lab speak English.

Bring the car, your registration or DMV renewal notice, and a way to pay. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.

Oc Smog Lab is a Test Only station, so it cannot do the repair. You would have the work done at a repair shop, then come back for the free retest within 30 days. California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

The closest alternatives in Placentia are In And Out Smog (0.1 mi) and Castners Auto Service Inc (0.1 mi). Both are listed further up this page with their ratings and hours.