Smog Check You Can Trust

At Mac Auto Repair, we make the smog check process simple and stress-free. Whether you’re due for your regular inspection or need to get your vehicle certified for registration, our experienced and certified technicians are here to help.

To make sure your car is ready for a smog check in California, follow these steps:

Check the Check Engine Light: If it's on, get it fixed before the test. The car will fail if the light is illuminated.

Ensure Proper Warm-Up: Drive the car for at least 20 minutes before the test to ensure the engine is fully warmed up.

Inspect the Emission System: Ensure the exhaust system (including catalytic converter and muffler) is in good condition and not leaking.

Perform Basic Maintenance: Change the air filter, oil, and spark plugs if needed, and check tire pressure.

Check the Battery: Ensure the battery is charged and in good condition.

Emissions System Components: Make sure parts like the gas cap, PCV valve, and oxygen sensors are functioning correctly.

Ensure No Recent Battery Disconnects: If the battery was recently disconnected, it may take some time for the car’s system to recalibrate and be ready for testing.

These steps help your car pass the smog check by ensuring it runs efficiently and meets emission standards.