North Carolina · DWI · Checked October 2026

Ignition Interlock Rules in North Carolina

Ignition Interlock Rules in North Carolina: What Are the Rules?

When North Carolina requires an ignition interlock after a DWI.

First offense
Only if BAC was 0.15 or more: for 1 year after restoration from a 1-year revocation
Repeat offenses
Yes if the prior offense was within 7 years: 3 years after a 4-year revocation, 7 years after a permanent revocation; also after habitual impaired driving or an Aggravated Level One sentence

First Offense in North Carolina

only if BAC was 0.15 or more: for 1 year after restoration from a 1-year revocation

Official source: first offense (North Carolina)

Repeat Offenses in North Carolina

yes if the prior offense was within 7 years: 3 years after a 4-year revocation, 7 years after a permanent revocation; also after habitual impaired driving or an Aggravated Level One sentence

Official source: repeat offenses (North Carolina)

How the Program Works in North Carolina

DMV places the interlock restriction on the license at restoration; the driver may operate only an interlock-equipped vehicle and pays the cost (a partial cost waiver is available on a hardship affidavit). Any restored DWI license carries an alcohol restriction (0.04 after a first restoration, 0.00 after a second) for 3 years, or 7 years after a permanent revocation.

Official source: how the program works (North Carolina)

More on DWI Law in North Carolina

See the full overview of DWI laws in North Carolina and read about how ignition interlock programs work.

This page summarizes North Carolina law from official sources, checked October 2026. It isn't legal advice; a lawyer licensed in North Carolina can advise on your case.

Frequently Asked Questions

Is an Ignition Interlock Required for a First DWI in North Carolina?

only if BAC was 0.15 or more: for 1 year after restoration from a 1-year revocation

Is an Interlock Required for Repeat Offenses?

yes if the prior offense was within 7 years: 3 years after a 4-year revocation, 7 years after a permanent revocation; also after habitual impaired driving or an Aggravated Level One sentence

Sources

  1. Ignition interlock

dui.help is an independent guide, not a law firm or a government agency, and doesn't give legal advice. For advice on your case, talk to a lawyer licensed in your state; your state bar can refer you, and if you can't afford a lawyer, ask the court about a public defender.