CA State Certified Smog Inspection Station | San Ramon Valley Import Center

CA State Certified Smog Inspection Station

For vehicles over 8 years old, most counties in the State of California require a Smog Inspection every other year to complete your vehicle registration. Smog checks are also required on qualifying vehicles at time of sale. Valley Import Center is a Test and Repair station, which means we are authorized by the State to perform both smog tests and emission-related repairs.

To increase program accuracy and reduce potential fraud, California periodically directs some cars and trucks to “Test Only” Smog Inspection Stations. The Test Only stations are not allowed to perform any emission-related diagnostics and repairs. The top of your vehicle registration reminder will indicate whether your vehicle must go to a "Test Only" station.  

Smog Inspection Stations have a set of BAR certified equipment, including a gas analyzer, a dynamometer and a evaporation system testing machine. A Smog Inspection consists of visual inspection, emission sampling while the engine is under simulated driving condition and emission control system functional test. If a vehicle fails the Smog Inspection, a diagnostic procedure should be performed to uncover the cause of the failure in order to correctly repair the vehicle.

San Ramon Valley Import Center is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call Valley Import Center (925) 838-0991 if you have any issues in accessing any area of our website.