Alonso's Auto Repair

No. Alonso's Auto Repair is not STAR certified. If your DMV renewal notice says "STAR Station Required," you will need to visit a STAR certified station instead.

No. Alonso's Auto Repair 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.

Alonso's Auto Repair 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. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Alonso's Auto Repair accepts walk-ins, so you can drive in without booking ahead.

Alonso's Auto Repair accepts Cash, Credit Card.

Alonso's Auto Repair has held a BAR smog license since 2019. You can verify the license status at bar.ca.gov.

Alonso's Auto Repair 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) 946-0543 for a quote.

Alonso's Auto Repair does not take online bookings here, but walk-ins are welcome. Call (909) 946-0543 to check the wait.

Staff at Alonso's Auto Repair 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 Alonso's Auto Repair 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 Upland are Al & Lees Auto Care Center and Gustavo's Auto Shop (0.1 mi). Both are listed further up this page with their ratings and hours.