How do you pass the smog test?

To pass a smog test, ensure your vehicle is well-maintained by checking and replacing the air filter, oil, and spark plugs as needed. Make sure the check engine light is off, as any warning signals can lead to failure. It's also beneficial to drive your car for at least 20 minutes before the test to ensure the engine is warmed up. If your vehicle has any issues, addressing them prior to the test can help improve your chances of passing.