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Emissions Test for Out-of-State Vehicles in Arizona

Arizona mandates emissions testing for certain vehicles to help maintain air quality, especially in metropolitan areas like Phoenix and Tucson. If you're bringing a vehicle into Arizona from another state, understanding the emissions testing requirements is essential for registering your vehicle and complying with state laws.

Who Needs an Emissions Test?

Most vehicles being registered in Maricopa or Pima counties must pass an emissions test, even if they passed one in their previous state. This includes:

  • Vehicles registered in the Phoenix or Tucson metro areas
  • Gasoline-powered vehicles model year 1967 and newer
  • Diesel vehicles up to 26,000 pounds gross vehicle weight rating (GVWR)
  • Out-of-state vehicles that will be operated primarily in Arizona

The Arizona Department of Environmental Quality (ADEQ) enforces these rules. You can check if your ZIP code requires testing through the ADEQ Emissions Zip Code Tool.

Out-of-State Vehicle Registration Process

To register your out-of-state vehicle in Arizona, you must:

  1. Obtain a Level I vehicle inspection (can be done at most MVD offices or authorized third-party providers)
  2. Provide your current out-of-state title and registration
  3. Pass an emissions test, if required
  4. Present proof of Arizona insurance
  5. Pay registration fees and any applicable taxes

Before heading to the MVD, it's recommended to review our Arizona DMV Written Test Overview for a broader understanding of DMV services.

Emissions Test Exemptions

Some vehicles are exempt from emissions testing:

  • Model year vehicles less than five years old
  • Electric vehicles
  • Certain collectible or classic cars registered as such
  • Motorcycles (in Tucson, but not Phoenix)
  • Alternative fuel vehicles with a current AFV sticker

For full eligibility, visit the official Arizona Emissions Testing Program page.

Testing Locations and Appointments

There are dozens of testing stations throughout the Phoenix and Tucson areas. ADEQ also operates mobile testing units and offers an appointment system for convenience.

You can find the nearest station using the ADEQ Testing Locations Map.

What to Bring to the Test

To complete an emissions test for an out-of-state vehicle, bring:

  • The vehicle itself
  • Your vehicle registration or title
  • Payment method for the testing fee (typically $12–$25)

After Passing the Test

Once your vehicle passes the emissions test, the results are uploaded directly to the Arizona MVD system. You can then proceed to complete your registration in person or online, depending on your situation.

Need more help? Check out our Common Questions on Arizona Permit Test to clarify common DMV concerns.

Failing the Test

If your vehicle fails:

  • You’ll receive a Vehicle Inspection Report outlining the reasons.
  • Make the necessary repairs and retest.
  • In some cases, waivers are available for older vehicles if repair costs exceed a certain threshold.

For more on keeping your vehicle compliant in Arizona, explore our Arizona DMV Practice Test to ensure you’re fully prepared for all DMV requirements.