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 duration: 8 months. Monthly cost: $65-$100.
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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
| Offense | IID Duration |
|---|---|
| 1st Offense | 8 months |
| 2nd Offense | 2 years |
| 3rd Offense | 2 years |
| 4th+ Offense | 4 years |
BAC threshold: Any DUI conviction (no BAC threshold — all offenders). DWAI (BAC 0.05-0.079%) also requires IID.
IID Cost Breakdown in Colorado
| Item | Cost | Notes |
|---|---|---|
| Installation | $70-$150 | One-time fee. Takes about 1 hour. |
| Monthly Lease + Monitoring | $65-$100/mo | Includes device lease and monitoring. |
| Calibration | $25-$75 | Every 60 days. |
| Removal | $50-$100 | One-time fee when IID period ends. |
| Estimated Total (6 months) | $510-$850 | Install + 6 months lease + removal. |
| Estimated Total (12 months) | $900-$1,450 | Install + 12 months lease + removal. |
One-time
Lease + monitoring
Every 60 days
One-time
All-in estimate
All-in estimate
Approved IID Providers in Colorado
Contact providers directly for current pricing and service center locations in Colorado. Compare at least 2-3 providers before choosing — prices and service quality vary.
Restricted License with IID
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?
What about a DWAI in Colorado?
How long do I need an IID in Colorado?
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