Arizona · DUI · Checked October 2026
Ignition Interlock Rules in Arizona
Ignition Interlock Rules in Arizona: What Are the Rules?
When Arizona requires an ignition interlock after a DUI.
- First offense
- 12 months for a first DUI involving alcohol (may end after 6 months if conditions are met); 18 months for a first super extreme DUI (0.20+)
- Repeat offenses
- 12 months for a second standard DUI within 84 months; 24 months for a second 0.20+ DUI or for aggravated DUI
First Offense in Arizona
12 months for a first DUI involving alcohol (may end after 6 months if conditions are met); 18 months for a first super extreme DUI (0.20+)
Repeat Offenses in Arizona
12 months for a second standard DUI within 84 months; 24 months for a second 0.20+ DUI or for aggravated DUI
How the Program Works in Arizona
The requirement starts when you finish screening, education or treatment and are otherwise eligible to reinstate. Install within 30 days of conviction. Removing the device early suspends your license and restarts the requirement.
More on DUI Law in Arizona
See the full overview of DUI laws in Arizona and read about how ignition interlock programs work.
This page summarizes Arizona law from official sources, checked October 2026. It isn't legal advice; a lawyer licensed in Arizona can advise on your case.
Frequently Asked Questions
Is an Ignition Interlock Required for a First DUI in Arizona?
12 months for a first DUI involving alcohol (may end after 6 months if conditions are met); 18 months for a first super extreme DUI (0.20+)
Is an Interlock Required for Repeat Offenses?
12 months for a second standard DUI within 84 months; 24 months for a second 0.20+ DUI or for aggravated DUI