EV Emissions Test Requirements in Arizona

Electric vehicles (EVs) are becoming increasingly popular in Arizona, not just for their eco-friendliness but also for the streamlined regulatory requirements they enjoy. One of the most notable differences between EVs and traditional internal combustion engine (ICE) vehicles is how Arizona handles emissions testing.

Are EVs Subject to Emissions Testing in Arizona?

No, fully electric vehicles are exempt from emissions testing in Arizona. According to the Arizona Department of Environmental Quality (ADEQ), vehicles that run exclusively on electricity do not produce tailpipe emissions and therefore do not need to undergo the emissions inspection required for gasoline and diesel vehicles.

This exemption applies to all 100% electric vehicles, regardless of model year or registration location in Arizona. However, this does not include hybrid vehicles or plug-in hybrid electric vehicles (PHEVs), which still use gasoline engines and are subject to testing.

For the most current exemptions and regulations, consult the official Arizona Emissions Testing Program page maintained by the ADEQ.

Areas Where Emissions Testing is Required

In Arizona, emissions testing is required for most gasoline-powered vehicles registered in the Phoenix and Tucson metropolitan areas. These regions fall under EPA non-attainment areas due to air quality concerns. EVs, however, are not required to undergo emissions testing in these regions.

If you're unsure about what applies to your vehicle, you can check using the ADEQ’s VIN lookup tool or by contacting your local DMV office.

Registration and Emissions Testing Exemption

Although emissions testing is waived for EVs, owners must still complete vehicle registration and ensure that the emissions exemption is properly recorded. This typically happens automatically when the vehicle’s fuel type is indicated as electric in the vehicle’s title and registration documents. If your registration renewal notice incorrectly states that an emissions test is required, contact the Arizona MVD or ADEQ to update your records.

You can learn more about the broader registration process in Arizona DMV Written Test Overview.

Hybrid and Plug-in Hybrid Vehicles

Unlike fully electric vehicles, hybrid and plug-in hybrid electric vehicles (PHEVs) still require emissions testing if they are registered in a testing-required area and fall within the applicable model year range. ADEQ recommends checking individual vehicle status through their website or speaking with a certified emissions testing center.

Where to Get More Information

If you’re purchasing a new or used EV and want to understand all your responsibilities as a driver in Arizona, the ADEQ and Arizona MVD websites are the best authoritative sources.