Copyright © Smog Star Express. All Rights Reserved

Smog Star Express
1130 Detroit Ave. #1 Concord, CA 94520 US
Phone: 925-356-6858 Website:

Copyright © Smog Star Express. All Rights Reserved

Looking for a STAR Smog Test Station you can trust? Look no further! 

We’re committed to Smog Testing and to serving you with honesty, quality, and value.  We do not perform repairs. 

We are family owned and operated and provide honest business practices.

About Us

We Love Cars

Our technicians come to work smiling and have a passion for automobiles.  They are fully qualified to smog test your car.

Leave it to Us

Doing it yourself is not an option.  Rely on our knowledge and experience instead. Your car or truck is in the best of hands.

We Truly Care

The right care extends the life of any car or truck. We bring advanced cutting-edge diagnostics to the table every time.

Our Promise to You

We promise to always provide value and outstanding service, regardless of your vehicle type.



                     1130 Detroit Ave.

​                     Tel: 925-356-6858

Why Choose Us

We have two complete testing bays where we perform ANY smog test on ANY vehicle including RVs and Diesels with quick turnaround time.

We use the latest diagnostic technology to provide high-quality service and quick turnaround.

We accept Corporate Accounts and process Purchase Orders.

We provide pick-up service within a 5 mile radius.

While you wait you can enjoy our complimentary WiFi, beverages, and snacks. 

We know what we’re doing, and we’re dedicated to help keeping our air clean. Your satisfaction is our highest priority!

Serving the East Bay since 2004

Concord, Martinez, Pleasant Hill, Clayton, Pittsburg, Walnut Creek, Lafayette, Orinda, Moraga, Danville, Alamo, San Ramon.