A standard smog check
is designed to gauge the quantity and quality of your car's emissions. If the emissions test indicates that either of these standards is not met, you may not be able to complete your car's registration. A1 Muffler
provides repair and maintenance to help you pass
DEQ certification easily. In an effort to reduce air pollution, the vehicle inspection program requires smog testing when drivers register or renew their vehicles in Portland. This prevents toxins such as greenhouse gases and carbon monoxide from being unnecessarily and excessively released into the air by car emissions. We can help you prepare for the test and get your vehicle to a satisfactory level.