Smog 300

Yes. Smog 300 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. Smog 300 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.

Smog 300 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 1 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Smog 300 accepts walk-ins, so you can drive in without booking ahead.

Smog 300 accepts Credit Card, Debit Card.

Google lists the following accessibility features at Smog 300: wheelchair accessible entrance, wheelchair accessible parking.

Smog 300 has held a BAR smog license since 2024. You can verify the license status at bar.ca.gov.

Smog 300 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 (619) 631-7999 for a quote.

Smog 300 does not take online bookings here, but walk-ins are welcome. Call (619) 631-7999 to check the wait.

Staff at Smog 300 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 Smog 300 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 El Cajon are Legacy Import Auto Care (0.1 mi) and Trust Auto Repair (0.4 mi). Both are listed further up this page with their ratings and hours.