State hotline phone numbers for reporting smoking vehicles. 

Colorado

303-692-3211

cdphe.smokeline@state.co.us

• Please include the vehicle's license plate number and, if possible, whether it is gasoline- or diesel-powered

Texas

(800) 453-SMOG (7664)

North Central Texas

 #SMOKE (#76653) wireless, or (817) 704-2522 landline

California

1-800-END-SMOG (1-800-363-7664)

Please have this information ready to report:

• Vehicle Type
• License Plate Number
• Date, Time, and Location of the Incident
• Make and Model of the Vehicle

New Jersey

(877) 927-6337

Nevada

(877) 927-6337

Arizona

(877) 692-9227