Ignition Interlock Device (IID) in Washington

Washington uses the term "DUI" for impaired driving offenses. IID requirement: required for all dui offenses. First offense scope: 1 year. Confirm your actual notice and license status.

Last updated: 2026-09-07

Required for all DUI offenses

Quick Answer

Washington requires IID for all DUI convictions, including first offenses. The device is mandatory for license reinstatement and for obtaining an IID-restricted license.

IID Duration by Offense

Offense	IID Duration
1st Offense	1 year
2nd Offense	5 years
3rd Offense	10 years
4th+ Offense	10 years or longer

BAC threshold: Any DUI conviction (no BAC threshold — all offenders)

Confirm the device, provider and written quote

Check the responsible authority’s current approval information for the particular device and installer. Request the billing unit, included services, actual paid visit schedule, taxes, fees and removal terms in writing. Confirm financial assistance separately.

Add your own quoted charges in the IID worksheet. Unknown charges stay unknown; no local price or appointment count is assumed.

Restricted License with IID

Available

Washington issues an IID-restricted license allowing driving with the device installed. The license has no destination restrictions — you can drive anywhere.

Tampering / Circumvention Penalties

Tampering with an IID in Washington is a gross misdemeanor carrying up to 364 days in jail and a $5,000 fine.

Early Removal

Washington does not allow early removal.

Washington-Specific Notes

Washington has very long IID requirements for repeat offenders: 5 years for second offense and 10 years for third. These are among the longest in the nation. The IID-restricted license allows unrestricted driving (no destination limits).

Frequently Asked Questions

Is an IID required for a first DUI in Washington?

Yes. Washington requires IID for all DUI convictions, including first offenses, for 1 year.

How long do I need an IID in Washington?

First offense: 1 year. Second: 5 years. Third: 10 years. These are among the longest IID requirements in the country.

How much does an IID cost in Washington?

Get a written quote for your vehicle and program. Confirm the billing period, included service, separately paid visits, taxes, state/program fees and removal charges. Verify any financial assistance before assuming a discount. A generic state price range is not your quote.

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Disclaimer: This is informational only, not legal advice. IID requirements, costs, and approved providers change frequently. Verify current requirements with the Washington DMV, your IID provider, or a qualified DUI attorney in Washington.

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Sources

NHTSA: interlock device and program background. This national reference does not verify every state rule above. Confirm the applicable law and current instructions with the authority named on your order or licensing notice.