Castners Auto Service

Yes. Castners Auto Service Inc is STAR certified with the California Bureau of Automotive Repair, so it can test vehicles the DMV directs to a STAR station, including gross polluters.

No. Castners Auto Service Inc is licensed as a Test & Repair station. This station can run your smog test and, if the vehicle fails, diagnose and repair it in the same shop.

Castners Auto Service Inc is open Monday 7:30 AM to 5 PM; Tuesday 7:30 AM to 5 PM; Wednesday 7:30 AM to 5 PM; Thursday 7:30 AM to 5 PM; Friday 7:30 AM to 5 PM. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Castners Auto Service Inc accepts walk-ins, so you can drive in without booking ahead.

Castners Auto Service Inc accepts Cash, Credit Card.

Castners Auto Service Inc has held a BAR smog license since 1988. You can verify the license status at bar.ca.gov.

Castners Auto Service Inc 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) 528-1311 for a quote.

Castners Auto Service Inc does not take online bookings here, but walk-ins are welcome. Call (714) 528-1311 to check the wait.

Staff at Castners Auto Service Inc 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.

Because Castners Auto Service Inc is a Test & Repair station, it can diagnose and repair the problem in the same shop, then run the free retest within 30 days. If the repair bill is steep, California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

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