Vehicle Emissions

Vehicle Emissions Control (VEC)

The increasing use of vehicles in Phoenix and Tucson contributes to air pollution in Arizona. To improve air quality, ADEQ administers a mandatory vehicle emissions testing program known as Vehicle Emissions Control (VEC) | Learn More >

Vehicle Emissions Testing Station Locations and Information
ADEQ uses newest testing technology and customer service measures to increase the effectiveness of emissions testing, shortening the time customers spend in line, resulting in cleaner air and better customer service. Not sure if you live in a required Emissions Testing area? You can enter your zip code and see | View Map >  

Find Emissions Testing Stations, wait times, exemptions and more | Visit >

Out-of-State and Military Emissions Testing Exemptions 

To better serve our customers and military personnel, we have removed the burden of paper forms and gone paperless for Out-of-State and Military Emissions Testing Exemptions | Learn More >

Voluntary Vehicle Repair Program (VVRP) Helps Customers with Repair Cost When Vehicles Fail Emissions Test 

The Voluntary Vehicle Repair Program (VVRP) is designed to help those who have failed an emissions inspection offset the cost of repairing their vehicle. If your vehicle qualifies, the VVRP will assist you with the required repairs of your vehicle. ADEQ will pay up to $550 for repair of gasoline vehicles and up to $1,000 for repair of heavy duty diesel vehicles. Customers in the program will co-pay the first $150 of repairs while the ADEQ will contribute up to the designated amounts | Learn More >

Recognized Repair Facility Program (RRFP)

In 2015, there were approximately 51,165 On-Board Diagnostic (OBD) vehicles that were unready when presented for emissions inspection and another 145,351 vehicles that failed the emissions inspection test. In an effort to reduce these numbers, ADEQ’s VECS Program launched the Recognized Repair Facility Program | Learn More  >

Fleet Vehicle Emissions Testing Permit 

If you are a new or used car dealer, or own or lease a fleet of vehicles, you may apply for a Fleet Station Permit to perform emissions inspections on-site. | Learn More  >