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Home Page HOME


Address: 19939 Valley Blvd 
Walnut, CA 91789   Directions

Phone Number (909) 869-8056



- We Smog All Vehicles
- Comfortable Viewing/Waiting Area
- Diesel Smog Check
- DMV Registrations Services
- Gross Polluter Certification
- Hablamos Espanol
- Hybrid Smog Tests
- Out of State Smog Check
- Registration Renewal Smogs
- STAR Smog Inspection
- Title Transfer Smog Test

No Gimmicks, No Repairs, No Tricks... Just straight forward and low priced smog checks. Our ASE certified technicians have the tools and expertise to get your vehicle in and out as quickly as possible. In fact, our average smog check takes less than 15 minutes!

At Piedra's Smog Test Only we utilize the latest in smog testing equipment and employ technicians familiar with vehicles of all makes and model.

Whether you drive a car, truck, van, RV, diesel or SUV, we're able to inspect your vehicle, properly, efficiently, and most importantly... accurately.

New! In-House DMV Services - Get your smog test and new license plate tags all under one roof. We offer DMV vehicle registration service in-house to help you save time.

Shop Hours: MON-FRI 8:00am to 6:00pm. SAT 8:00am to 4:00pm. Appointments are not needed. Just drive on in, anytime.

Smog Special: Get your smog test for ONLY $36.75* with your SmogTips coupon, plus get one (1) free re-test if needed.

*Applies to most 2000 & newer cars. Add $20 for years 1996 - 1999. Add $30 for years 1995 and older. Must present coupon prior to inspection.



Which Type Should I Choose?


PIEDRA'S SMOG TEST ONLY - 19939 Valley Blvd Walnut, California. (909) 869-8056

More certified smog station near Walnut, CA.