Massachusetts · OUI · Checked October 2026
Ignition Interlock Rules in Massachusetts
Ignition Interlock Rules in Massachusetts: What Are the Rules?
When Massachusetts requires an ignition interlock after an OUI.
- First offense
- Not required by statute; may be ordered on a first-offense hardship license when blood alcohol was 0.15 or more
- Repeat offenses
- Required for 2 years on every vehicle owned, leased or operated before a repeat offender's license is restored
First Offense in Massachusetts
not required by statute; may be ordered on a first-offense hardship license when blood alcohol was 0.15 or more
Repeat Offenses in Massachusetts
required for 2 years on every vehicle owned, leased or operated before a repeat offender's license is restored
How the Program Works in Massachusetts
the Registrar may revoke for an extended period or for life after removal, missed inspections, or two start-up blocks or readings above 0.02
More on OUI Law in Massachusetts
See the full overview of OUI laws in Massachusetts and read about how ignition interlock programs work.
This page summarizes Massachusetts law from official sources, checked October 2026. It isn't legal advice; a lawyer licensed in Massachusetts can advise on your case.
Frequently Asked Questions
Is an Ignition Interlock Required for a First OUI in Massachusetts?
not required by statute; may be ordered on a first-offense hardship license when blood alcohol was 0.15 or more
Is an Interlock Required for Repeat Offenses?
required for 2 years on every vehicle owned, leased or operated before a repeat offender's license is restored