El Primo Smog

Yes. El Primo Smog 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.

Yes. El Primo Smog 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.

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

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

El Primo Smog accepts Credit Card, Debit Card, NFC/Contactless.

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

El Primo Smog has held a BAR smog license since 2015. You can verify the license status at bar.ca.gov.

El Primo Smog 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) 355-2400 for a quote.

El Primo Smog does not take online bookings here, but walk-ins are welcome. Call (909) 355-2400 to check the wait.

Staff at El Primo Smog 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.

El Primo Smog 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 Fontana are Fontana Smog Check Station and United Motors (0.2 mi). Both are listed further up this page with their ratings and hours.