King Auto Care

No. King Auto Care 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.

King Auto Care is open Monday 7:30 AM to 5:30 PM; Tuesday 7:30 AM to 5:30 PM; Wednesday 7:30 AM to 5:30 PM; Thursday 7:30 AM to 5:30 PM; Friday 7:30 AM to 5:30 PM; Saturday 8:30 AM to 4 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. King Auto Care accepts walk-ins, so you can drive in without booking ahead.

King Auto Care accepts Cash, Credit Card.

King Auto Care has held a BAR smog license since 2024. You can verify the license status at bar.ca.gov.

King Auto Care 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 (925) 757-7274 for a quote.

King Auto Care does not take online bookings here, but walk-ins are welcome. Call (925) 757-7274 to check the wait.

Staff at King Auto Care 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 King Auto Care 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 Antioch are Blueline Smog (0.6 mi) and All Star Smog Antioch (0.7 mi). Both are listed further up this page with their ratings and hours.