How to Pass a Smog Check First Time

More Savvy Tips

Relax! Most vehicles can pass their smog check! First take care of any maintenance that is due (or overdue) such as an oil change or tune-up before the smog check. If you do mostly city driving, give the car a run on the freeway for 50 miles and fill up with a fresh tank of quality gas. Premium fuel can improve your odds slightly, and make sure your gas cap is intact and fits tightly. A visual inspection of the engine compartment could reveal broken or cracked hoses or components. Do those repairs before the test.

The Test-Only Smog Check, an essential part of the Smog Check II program recently initiated in the Bay area, is considered a more consumer friendly smog check and is no different from the smog performed at any other of the smog stations.