How Should I Prepare for My Smog Test?

Did you know there are more vehicles in the state of CA than there are people? With so many cars in a bustling city, there are no words to describe the amount of pollution. The state government realized this and implemented laws and regulations for vehicles producing high smog levels to better the environment. To limit the environmental impacts, a smog check has become an essential part of today's vehicle maintenance.


Smog checks are an excellent way to manage society's air quality and helps prevent your vehicle from contributing to a high pollution level. If your automobile is eight years old or older and is a gasoline-powered vehicle, alternative fuel vehicle, or hybrid vehicle, then you are required to pass a smog test. Your car needs to be approved every two years to be a registered vehicle in CA. To pass this test, here are some of our top tips to follow beforehand.

Prepare in Advance

Once you get your renewal notice from the DMV, you should make an appointment, mark your calendar, and start preparing your vehicle for the test. You can pay your registration fee early to avoid late charges, but you must pass your smog test to complete your registration requirements.

Perform Regular Maintenance

Maintenance is key to successfully pass the smog check. You should get all your maintenance tasks out the way, including oil changes, spark plug replacements, and tire pressure checks. Cleaning your fuel injectors can also help by removing carbon deposits and reducing emissions. 

Fix Check Engine Light

If your check engine light is on, you should go to your auto repair shop to repair it. Otherwise, a lit check engine light will result in immediate failure.

To receive an accurate diagnosis of what triggered the light, you should seek professional help. There is always the possibility that you may need more intricate repairs before the test.

Warm-Up Your Car Before Test

On the day of the test, you should ride around for at least 15 minutes to warm up your car. Doing so will ensure your catalytic converter will be up to an optimal temperature for accurate testing.


If you are a California resident that requires a smog check soon, please give TOS Auto Repair a call or visit today!

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