What is a smog check, and why is it important?

Smog check, smog test and emission check all refer to the same thing: a test of a vehicle and its engine emissions performed at a licensed smog testing facility. Smog checks are regulated by the U.S. Environmental Protection Agency (EPA), whose goal is to protect public health and the environment from the dangerous effects of air pollution. In…Smog check, smog test and emission check all refer to the same thing: a test of a vehicle and its engine emissions performed at a licensed smog testing facility. Smog checks are regulated by the U.S. Environmental Protection Agency (EPA), whose goal is to protect public health and the environment from the dangerous effects of air pollution. In…