Why Emissions Testing is Required Vehicle emissions testing is required in major metropolitan areas that are not meeting federal air quality standards for ozone and other pollutants. In Arizona, testing is required in the Phoenix and Tucson metropolitan areas, where ozone and particulate matter pollutio...
Now emissions testing is faster and easier! Check for conveniently located stations near your home or work, and see up-to-the-minute wait times so that you aren’t waiting in long lines. REMEMBER: Testing is faster weekdays from 4-5 p.m., Saturday afternoons and mid-month. VEHICLE NOT ...