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Ignition Interlock Device (IID) in Colorado

Colorado uses the term "DUI / DWAI" for impaired driving offenses. IID requirement: required for all dui offenses. First offense scope: 8 months. Confirm your actual notice and license status.

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Required for all DUI offenses

Quick Answer

Colorado requires IID for all DUI and DWAI convictions, including first offenses. The IID is mandatory for early reinstatement of driving privileges during the revocation period.

IID Duration by Offense

OffenseIID Duration
1st Offense8 months
2nd Offense2 years
3rd Offense2 years
4th+ Offense4 years

BAC threshold: Any DUI conviction (no BAC threshold — all offenders). DWAI (BAC 0.05-0.079%) also requires IID.

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

Colorado allows an early reinstatement interlock-restricted license after 1 month of the revocation period for first offenders. This lets you drive with the IID installed rather than waiting out the full revocation.

Tampering / Circumvention Penalties

Tampering with or circumventing an IID in Colorado is a Class 1 misdemeanor traffic offense. Penalties include jail time, fines, and extension of the IID requirement. Driving without an IID when required is an additional misdemeanor.

Early Removal

Colorado does not allow early removal for standard cases. However, if your IID shows full compliance for the required period with no violations, removal is straightforward.

Colorado-Specific Notes

Colorado has a lifetime lookback for DUI priors, meaning every DUI ever counts toward repeat offender status. The state also has a separate DWAI offense (Driving While Ability Impaired) for BAC between 0.05% and 0.079%, which also triggers IID requirements.

Frequently Asked Questions

Is an IID required for a first DUI in Colorado?
Yes. Colorado requires IID for all DUI offenses, including first-time convictions. The minimum duration is 8 months for a first offense.
What about a DWAI in Colorado?
DWAI (Driving While Ability Impaired, BAC 0.05-0.079%) also requires IID installation in Colorado. The same IID rules apply as for a standard DUI.
How long do I need an IID in Colorado?
First offense: 8 months. Second offense: 2 years. Third offense: 2 years. Fourth or more: 4 years.

Related Colorado Guides

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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 Colorado DMV, your IID provider, or a qualified DUI attorney in Colorado.
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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.