What is the difference between a smog check&a smog test?

Answer In California, the difference between a Smog Test and a Smog Check is where the inspection may occur. Drivers receiving Department of Motor Vehicle (DMV) paperwork should pay particular attention t... Read More »

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Vehicle smog CA to another state, smog legal?

Can't speak for all states but in most if the car is classified as an antique (25 years old or more) it is exempt from smog requirements. California is one of the few exceptions. Not sure what othe... Read More »

What are smog checks?

A smog check measures the amount of emissions from your vehicle by attaching a device to the exhaust while revving your engine. The amount of pollutants brought into the air are then measured and c... Read More »

What is smog caused by?

Photochemical smog is caused by freons, the greenhouse gases responsible for global warming, which allow water to condense on smoke particles. Industrial smog is created from burning coal or oil, w... Read More »

What is a photochemical smog?

Photochemical smog is a grayish-brown haze that develops over cities with large populations and warm and sunny climates, such as Los Angeles. The smog is created from three distinct elements: nitro... Read More »