Resources & FAQ
Everything you need to know about California smog checks
Frequently Asked Questions
Tips to Help Your Vehicle Pass
Warm Up Your Engine
Drive your car for about 20 minutes before arriving at your smog inspection center. This gives your car enough time for proper engine combustion.
Check Tire Pressure
Uneven, worn tires and incorrect tire pressure may cause incorrect emission test results.
Use Fuel Additives
Emission levels can be lowered by using fuel additives to the gas tank, which improves your combustion process and engine performance.
Change Your Oil
Regular oil changes can help you pass your smog check. Bad fumes from your oil pan can leak into your engine and cause a failed inspection.
Helpful Resources
Since the smog check program and California smog requirements are subject to changes, we have provided the following websites for smog test history, STAR smog stations list, smog check CAP application, and local DMV information.
Local DMV Information
Phone
(800) 777-0133Hours
Mon – Fri: 9:00 AM – 5:00 PM | Sat: 9:00 AM – 3:00 PM | Sun: Closed
