Colorado DUI Sentencing Statute: Penalties by Offense and Costs

Colorado DUI penalties by offense escalate sharply: a first conviction carries a mandatory minimum of five days in jail, a second jumps to ten consecutive days, a third to 60 days, and a fourth becomes a Class 4 felony punishable by two to six years in the Department of Corrections. Fines, license revocations, community service hours, and ignition interlock requirements all climb alongside the jail time, and Colorado counts prior convictions for DUI, DUI per se, DWAI, vehicular assault, and vehicular homicide — including out-of-state convictions — when determining which tier applies.

How Colorado Charges Impaired Driving

Colorado uses three separate charges, and the differences matter because a prior conviction under any of them counts against you at sentencing for the next.

DUI: You drove while substantially incapable of exercising clear judgment or physical control because of alcohol, drugs, or both. No specific BAC reading is required. Prosecutors can prove impairment through officer observations, field sobriety tests, and other evidence.
DUI per se: Your BAC measured 0.08 or higher at the time of driving or within two hours afterward. The BAC number alone is enough. A person can be charged with both DUI and DUI per se for the same incident, and sentences run concurrently if convicted of both.¹
DWAI: Your ability to drive was impaired to even the slightest degree. A BAC between 0.05 and 0.08 creates a permissible inference of impairment.²

A first DWAI carries two to 180 days in jail, a $200 to $500 fine, and 24 to 48 hours of community service. There is no administrative license revocation for a first DWAI, though it adds eight points to your driving record. For second and later offenses, DWAI and DUI penalties converge, because the sentencing statute treats them the same once you have any qualifying prior.²

First Offense DUI Penalties

A first DUI or DUI per se conviction carries five days to one year in the county jail. The five-day minimum is mandatory, but a judge can suspend it if you complete an alcohol and drug evaluation and finish the recommended Level I or Level II treatment program.³

Fines range from $600 to $1,000, and the court may suspend them. You must also perform 48 to 96 hours of community service, which the court cannot waive. If your BAC was 0.20 or higher, the minimum jail sentence doubles to ten days.³

Administratively, a first DUI conviction triggers a nine-month license revocation and adds 12 points to your driving record. You can apply for early reinstatement with an interlock-restricted license after one month.²

Second Offense DUI Penalties

A second conviction for DUI, DUI per se, or DWAI raises the mandatory minimum to ten consecutive days in jail, with a maximum of one year. This applies when you already have a prior conviction for any of those offenses, vehicular assault, or vehicular homicide. During those ten days, you cannot earn time off for good behavior or receive trusty-prisoner status.³

Fines range from $600 to $1,500, and community service increases to 48 to 120 hours. A second offense also requires at least two years of probation, with a one-year suspended jail sentence hanging over you if you violate the terms. Your license revocation extends to one year, and you must hold an interlock-restricted license for at least two years after reinstatement.³⁴

Third Offense DUI Penalties

A third misdemeanor conviction carries 60 days to one year in the county jail. Fines remain at $600 to $1,500, and community service stays at 48 to 120 hours. License revocation extends to two years, with a two-year interlock requirement upon reinstatement.³

At this level, courts become far less willing to grant sentencing alternatives. Judges often impose the full mandatory minimum or more, particularly when prior offenses occurred within a short timeframe or involved high BAC readings.²

Fourth Offense and Felony DUI

A fourth or subsequent DUI offense in Colorado is a Class 4 felony, regardless of how much time has passed between offenses. The statute counts prior convictions for DUI, DUI per se, DWAI, vehicular assault, and vehicular homicide, including convictions from other states.¹

A Class 4 felony DUI carries two to six years in the Colorado Department of Corrections, followed by a mandatory three-year period of parole. Fines range from $2,000 to $500,000. The court can also impose 48 to 120 hours of community service.⁵

DUI incidents that cause serious physical harm or death can result in felony charges even on a first offense. Causing serious bodily injury while driving under the influence is vehicular assault, a Class 4 felony carrying the same two-to-six-year sentencing range.⁶⁷

Aggravating Factors That Push Penalties Higher

Certain circumstances trigger enhanced penalties on top of the base tier. A BAC of 0.20 or higher on a first offense doubles the mandatory minimum jail time from five days to ten. Having a child in the vehicle can lead to additional charges such as child endangerment, and courts routinely treat it as a significant aggravating factor when deciding where to sentence within the statutory range. Prior offenses within the past five years and causing an accident also push judges toward harsher sentences.

Colorado law separately defines a “persistent drunk driver” as anyone whose BAC was 0.15 or higher at the time of driving or within two hours afterward.⁸ A person carrying that label must hold an interlock-restricted license for at least two years after reinstatement, even on a first offense.⁴

License Revocation Runs Separately from the Criminal Case

Colorado imposes license revocation through the Division of Motor Vehicles, and this administrative process is separate from the criminal case. It kicks in automatically when you fail or refuse a chemical test under Colorado’s express consent law. By driving on Colorado roads, you are considered to have consented to blood or breath testing if an officer has probable cause to believe you are impaired.⁹

Revocation periods for a failed chemical test at 0.08 or higher:

First offense: nine months, with eligibility for early reinstatement on an interlock-restricted license after one month.
Second offense: twelve months, with early reinstatement possible after one month, or two months if you refused the test.
Third or subsequent offense: twenty-four months, with the same early-reinstatement structure.

Refusing a chemical test does not spare you from revocation. A refusal is treated at least as seriously as a failed test, and it extends the hard revocation period, during which you cannot drive at all even with an interlock, from one month to two months on second and subsequent offenses. After any revocation, you must hold an interlock-restricted license for at least two years before qualifying for a standard license.¹⁰

You have seven days from the date of your arrest to request an express consent hearing with the Department of Revenue’s Hearings Division. Miss that window and the revocation takes effect automatically. The hearing addresses only your driving privileges, not criminal guilt.¹⁰

Costs That Follow a Colorado DUI Conviction

The statutory penalties are only part of what a conviction costs. Several consequences take effect after the case ends and can last for years.

Commercial Driver’s License

Federal law sets the BAC threshold for commercial motor vehicle operators at 0.04, half the standard limit. A first DUI conviction disqualifies you from operating a commercial vehicle for at least one year. If you were hauling hazardous materials at the time, the minimum disqualification is three years. A second DUI-related violation results in a lifetime disqualification from commercial driving, though federal regulations allow this to be reduced to no less than ten years in some cases.¹¹

Insurance and Other Expenses

Colorado requires SR-22 insurance filing after a DUI conviction, typically for nine months to three years following license reinstatement. The SR-22 form is a certificate proving you carry minimum liability coverage, and it signals to your insurer that you are a high-risk driver. Premiums increase substantially. Beyond insurance, the total financial hit includes court fines, mandatory alcohol evaluation and treatment fees, interlock installation and monthly monitoring costs, license reinstatement fees, and any lost wages from jail time or court appearances. These costs often exceed the court-imposed fine.

Travel to Canada

A DUI conviction can prevent you from entering Canada. Canadian immigration law treats impaired driving as a serious offense that makes a person criminally inadmissible. If fewer than five years have passed since you completed your sentence, entering Canada requires a Temporary Resident Permit. After five years, you can apply for criminal rehabilitation to clear the restriction. Only after ten or more years may you be considered automatically rehabilitated, and only if you have a single conviction on your record.

Employment and Professional Licensing

A felony DUI conviction can trigger professional licensing reviews for healthcare workers, teachers, lawyers, and other licensed professionals. Misdemeanor DUI convictions must often be disclosed on job applications and can complicate background checks. For anyone whose job requires driving, the license revocation alone may be enough to cause termination.

1
Justia. Colorado Code 42-4-1301 – Driving Under the Influence
2
Colorado General Assembly. Colorado Drunk Driving Laws – Colorado Law Summary
3
FindLaw. Colorado Code 42-4-1307 – Penalties
4
Justia. Colorado Code 42-2-132.5 – Interlock-Restricted License
5
Justia. Colorado Code 18-1.3-401 – Felonies Classified, Presumptive Penalties
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Justia. Colorado Code 18-3-205 – Vehicular Assault
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Justia. Colorado Code 18-3-106 – Vehicular Homicide
8
Justia. Colorado Code 42-1-102 – Definitions
9
Justia. Colorado Code 42-4-1301.1 – Expressed Consent for Testing
10
Colorado Division of Motor Vehicles. Basic Case Lifespan of an Express Consent Per Se or Refusal
11
Office of the Law Revision Counsel. 49 USC 31310 – Disqualifications