Arizona Emissions Testing Locations

Arizona requires emissions testing for many vehicles to help reduce air pollution and maintain air quality standards. If you live in the Phoenix or Tucson metro areas, you're likely required to have your vehicle tested before renewing your registration.

Understanding where to go, what to bring, and how the process works can make emissions testing much smoother.

Who Needs Emissions Testing in Arizona

The Arizona Department of Environmental Quality (ADEQ) mandates emissions testing for most vehicles registered in Maricopa and Pima counties. Generally, vehicles that are:

• Gasoline-powered and more than 5 years old
• Model years between 1967 and newer
• Weigh less than 8500 lbs.

Diesel vehicles, motorcycles, and electric vehicles may be exempt. You can check whether your vehicle is due for testing using the ADEQ Emissions Testing Locator.

Emissions Testing Locations in Arizona

Phoenix Area Testing Centers

The Phoenix metro area has multiple ADEQ-authorized testing facilities. These locations generally operate Monday through Saturday and offer drive-thru testing lanes. Some of the busiest locations include:

• Phoenix - 20th Street & Washington
• Glendale - 59th Avenue & Maryland
• Mesa - 1851 W. Baseline Road
• Scottsdale - 8448 E. Evans Road

For a full list and interactive map, visit the Phoenix Area Locations.

Tucson Area Testing Centers

Tucson residents also have access to emissions testing services at:

• 3931 N. Business Center Dr.
• 6661 S. Renaissance Dr.

These stations are typically less crowded than Phoenix locations and may offer faster service.

What to Bring to an Emissions Test

When you head to a testing facility, bring the following:

• Your vehicle registration or renewal notice
• The vehicle being tested
• Payment method (cash, credit/debit card)

The test usually takes about 20 minutes, depending on the line.

Emissions Test Fees in Arizona

Fees are generally $12.25 for most vehicles, but this can vary depending on the vehicle's weight and fuel type. ADEQ’s official fee schedule provides the most accurate pricing.

Testing Frequency and Renewal

If your vehicle is required to be tested, you must complete the emissions test before renewing your registration. In most cases:

• Newer vehicles: Tested every 2 years
• Older vehicles: May require annual testing

Retesting and Failing the Emissions Test

If your vehicle fails the emissions test, you must make necessary repairs and retest. ADEQ offers one free retest within 60 days. Diagnostic help may be available through ADEQ’s Vehicle Repair and Retrofit Program.

Tips for a Smooth Emissions Test

• Drive the vehicle for 15-20 minutes beforehand to ensure it’s warmed up
• Perform regular maintenance, including oil changes and air filter replacement
• Arrive during off-peak hours (typically mornings on weekdays)