Emissions Testing During Vehicle Transfer in Arizona

In Arizona, emissions testing is a crucial step when transferring ownership of a vehicle. This requirement helps maintain air quality and ensures that vehicles meet state environmental standards. The Arizona Department of Environmental Quality (ADEQ) oversees the Vehicle Emissions Inspection Program, which applies to certain areas and vehicle types.

When Emissions Testing is Required

If you are buying or selling a vehicle in the Phoenix or Tucson metro areas—designated as emissions control areas—an emissions test is typically required before the vehicle can be titled and registered.

The test must be completed:

• Within 90 days prior to registration or title transfer.
• On vehicles that are more than five model years old.
• Unless the vehicle qualifies for an exemption.

You can check whether a test is needed using the ADEQ’s emissions test lookup tool.

Vehicle Types and Exemptions

Not all vehicles require an emissions test in Arizona. The following are generally exempt:

• New vehicles (within the first five model years).
• Electric vehicles.
• Diesel vehicles with a Gross Vehicle Weight Rating (GVWR) over 26,000 pounds.
• Golf carts and ATVs.

However, hybrid vehicles are subject to emissions testing once they reach six years of age in the Phoenix area.

Seller and Buyer Responsibilities

Sellers should ensure the vehicle passes emissions testing if it’s due and provide a valid test certificate to the buyer. This avoids delays or fines when the buyer attempts to register the vehicle.

Buyers must verify whether an emissions test is required before completing the registration. If the vehicle fails the emissions test, the buyer may need to make repairs before registration is approved.

Where to Get Tested

Arizona operates several ADEQ-certified emissions testing stations in the affected regions. Most stations accept walk-ins, but appointments are encouraged during peak times. You can find locations and hours on the ADEQ website.

Cost and Validity

The cost of an emissions test typically ranges from $12 to $25, depending on the vehicle type and testing area. Once passed, the certificate is valid for 90 days, allowing enough time for the title transfer and registration.

If the vehicle fails the test, ADEQ may offer a waiver or assistance program for qualifying repairs, especially for low-income owners.

Additional Resources

Preparing for other DMV-related processes? You may also find these resources helpful:

• How to Pass the Arizona Written Test
• Common Questions on Arizona Permit Test