
Your smog test can be just as scary as taking your SATs. If you don’t pass, you can’t keep legally driving your car. This test ensures that you’re contributing to keeping the air clean. Keep on reading, because these tips will help increase your chances of passing.
Check Engine Light
This is the biggest and easiest issue to avoid; if you go into your smog test with your engine light on, it’s an immediate fail. Simply get your vehicle diagnosed and resolved in order to get one step closer to passing.

Make Sure Your Tires are Inflated
Most states run a dynamometer test, which forces your car to run at high speeds while staying stationary. When your tires aren’t fully inflated, your engine has to work even harder, meaning more fumes will get released into the air.
Avoid Rainy Weather
Rainy weather can cause issues with your tires, such as loss of traction, especially if your car is older. When your tires are wet, they can slip during the dynamometer test. This can result in a fail simply because it can give a false reading from the machine.

Oil Change
If your car is running with dirty oil, it releases more pollutants than it would with clean oil. While you’re in the process of changing the oil, have the technician also check for any issues with the hoses as they can have your car running the wrong way as well.
Drive Highway Speeds
Two weeks before your test, you should be driving at highway speeds causing your catalytic converter to heat up and burn away any gas or oil residue inside of your engine.

Drive Before Your Test
You should take your car out for a drive at least 20 minutes before your smog test because this will result in optimal results. When you do this, your car is put in its best state when running, which gives you a better chance of passing.
Tune Up
One of the main things you should do before your test, is take your vehicle in for a tune up. When you have a professional double checking that everything is good, it’s nearly impossible to fail!

Conclusion
Smog tests shouldn’t be as stressful as everyone makes it seem, and with these tips, it absolutely won’t be. When you run your car through all of these little inspections, you won’t have to worry about this test ever again!