Do I Need an Emissions Test in Arizona?

Arizona mandates vehicle emissions testing in specific areas to combat air pollution and ensure compliance with federal air quality standards. Whether your vehicle requires testing depends on factors like your location, vehicle type, and age.

Areas Requiring Emissions Testing

Emissions testing is primarily required in two designated areas:

Area A: Encompasses most of Maricopa County and parts of Pinal County, including the Phoenix metropolitan area.
Area B: Covers portions of Pima County, including the Tucson metropolitan area.

If your vehicle is registered in these areas or you commute into them for work, emissions testing is typically necessary. To determine if your address falls within these zones, consult the Vehicle Emissions Control (VEC) Address Locator provided by the Arizona Department of Environmental Quality (ADEQ).

Vehicles That Require Emissions Testing

Unless exempt, the following vehicles registered in Areas A or B must undergo emissions testing:

Model Year 1967 or newer: Vehicles older than 1966 are generally exempt.
Gasoline-powered vehicles: Subject to testing based on age and weight.
Diesel-powered vehicles: Depending on weight and usage.
Alternative Fuel Vehicles (AFVs): Subject to testing in the sixth year of registration and annually thereafter. Original Equipment Manufactured (OEM) AFVs may opt for testing in the fourth and fifth years due to warranty considerations.

Testing frequency varies:

Biennial Testing: Typically for newer vehicles.
Annual Testing: Often required for older vehicles or those with higher emissions potential.

Exemptions from Emissions Testing

Certain vehicles are exempt from emissions testing:

Newer Vehicles: Gasoline-powered vehicles five years old or newer.
Electric Vehicles: Fully electric vehicles are exempt.
Model Year 1966 or older: Considered exempt due to age.
Motorcycles and ATVs: Generally exempt.
Vehicles registered outside Areas A and B: Unless used to commute into these areas.
Apportioned Vehicles: Vehicles with apportioned registration are exempt.

For a detailed list of exemptions and to verify eligibility, visit the ADEQ Exemptions Page.

Out-of-State and Military Exemptions

If your vehicle is temporarily out of Arizona when registration is due, you may qualify for an exemption:

Out-of-State Exemption: Applicable if the vehicle is out of state for at least 90 days before registration expiration. If located in an area with emissions testing, a passing test from that jurisdiction must be submitted to ADEQ.
Military Exemption: Active-duty military personnel stationed outside Arizona may apply for an exemption, provided the vehicle is not in use.

Applications for these exemptions can be submitted through the ADEQ Online Portal.

Preparing for the Emissions Test

Before heading to a testing facility:

Check Engine Light: Ensure it's off; vehicles cannot pass with this light on.
Fuel Level: Maintain at least half a tank of fresh fuel.
Testing Window: For renewals, testing should occur no more than 90 days before registration expiration.

Test results are electronically transmitted to the Arizona Motor Vehicle Division (MVD). For testing locations and wait times, refer to myAZcar.com.

Assistance for Failed Emissions Tests

If your vehicle fails the emissions test:

Retesting: You have 60 days to retest without an additional fee.
Voluntary Vehicle Repair Program (VVRP): Offers financial assistance up to $900 for emissions-related repairs. More information is available on the ADEQ Car Help Page.
Waivers: In certain cases, if repairs cannot bring the vehicle into compliance, a waiver may be granted. Detailed requirements are outlined on the ADEQ Waivers Page.

Additional Resources

For further information on Arizona's emissions testing requirements and vehicle registration processes, consider exploring the following resources:

Staying informed and proactive ensures compliance with Arizona's emissions regulations and contributes to cleaner air for all residents.