Colorado DUI Sentencing Statute: Penalties, Aggravators, and License Revocation

Colorado DUI penalties by offense start at five days in jail and a $600 fine for a first conviction and climb to two to six years in prison for a fourth, which is a Class 4 felony. Each step up the ladder adds mandatory jail time, longer license revocation, higher fines, and a longer interlock requirement. The exact numbers depend on whether you are charged with DUI, DUI per se, or DWAI, and on aggravating factors like a BAC of 0.15 or higher.

DUI, DUI Per Se, and DWAI

Colorado splits impaired driving into three charges, and the one you face changes what the prosecutor must prove and what you are exposed to at sentencing.

A DUI means you drove while substantially incapable of exercising clear judgment or physical control because of alcohol, drugs, or both. No specific BAC reading is required. A DUI per se means your BAC measured 0.08 or higher at the time of driving or within two hours after. The number alone proves the case. You can be charged with both for the same incident, with sentences running concurrently if you are convicted of both.¹

DWAI is the lesser charge: 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. A first DWAI carries a lighter sentence than a first DUI: two to 180 days in jail, a $200 to $500 fine, 24 to 48 hours of community service, and no administrative license revocation, though it adds eight points to your record. Once you have a prior, however, the sentencing statute treats DWAI and DUI the same.²

First Offense

A first DUI or DUI per se conviction carries five days to one year in 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. Fines run $600 to $1,000 and may be suspended. Community service runs 48 to 96 hours, and the minimum cannot be waived.³

If your BAC was 0.20 or higher, the minimum jail sentence doubles to ten days. On the license side, a first DUI conviction triggers a nine-month revocation and adds 12 points to your record. You can apply for early reinstatement with an interlock-restricted license after one month.³²

Second Offense

A second conviction for DUI, DUI per se, or DWAI, when you already have a prior for any of those offenses or for vehicular assault or vehicular homicide, raises the mandatory minimum to ten consecutive days in jail, with a maximum of one year. During those ten days you cannot earn time off for good behavior or receive trusty-prisoner status. Fines run $600 to $1,500. Community service increases to 48 to 120 hours.³

A second offense also carries at least two years of probation, with a one-year suspended jail sentence hanging over any violation of probation 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

A third misdemeanor conviction carries 60 days to one year in county jail. Fines stay at $600 to $1,500 and community service at 48 to 120 hours. License revocation extends to two years, with a two-year interlock requirement upon reinstatement.³² By this point courts are 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.

Fourth or Subsequent Offense: Felony DUI

A fourth or subsequent DUI 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 parole period. Fines run $2,000 to $500,000. The court can also impose 48 to 120 hours of community service.⁵

Felony exposure is not limited to repeat offenders. Causing serious bodily injury while driving under the influence is vehicular assault, a Class 4 felony carrying the same two-to-six-year range, and a DUI crash resulting in death can be charged as vehicular homicide.⁶⁷⁵

Aggravators That Raise the Penalty

Several facts push a case to a harsher outcome within or above the standard tier.

Persistent drunk driver. Colorado law defines a persistent drunk driver as anyone whose BAC was 0.15 or higher at the time of driving or within two hours after.⁸ That designation forces an interlock-restricted license for at least two years after reinstatement, even on a first offense.⁴

BAC of 0.20 or higher. On a first offense, this doubles the mandatory minimum jail time from five days to ten.

Child in the vehicle. This can lead to additional charges such as child endangerment, and courts regularly treat it as a significant aggravating factor when sentencing within the statutory range.

Recent priors or an accident. Prior convictions within a short timeframe and causing a crash both push judges toward the higher end of the range.

Administrative License Revocation Runs Separately

The Division of Motor Vehicles handles license revocation on its own track, independent of 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 failing a chemical test (BAC of 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 extends the hard revocation period, during which you cannot drive at all, 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 arrest to request an express consent hearing. Miss that window and the revocation takes effect automatically.¹⁰

Costs That Keep Running After the Sentence

The sentence is only part of what a DUI costs. Several consequences continue 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 disqualifies you from operating a commercial vehicle for at least one year, or three years if you were hauling hazardous materials. A second DUI-related violation results in a lifetime disqualification from commercial driving, which federal regulations allow to be reduced to no less than ten years in some cases.¹¹

SR-22 Insurance

Colorado requires SR-22 insurance filing after a DUI, typically for nine months to three years following license reinstatement. The form itself just proves you carry minimum liability coverage, but it tells your insurer you are a high-risk driver. Premiums usually rise substantially. Add court fines, alcohol evaluation and treatment program fees, interlock installation and monthly monitoring, reinstatement fees, and lost wages, and the total often far exceeds the court-imposed fine.

Travel to Canada

A DUI conviction can bar you from entering Canada. If fewer than five years have passed since you completed your sentence, entering requires a Temporary Resident Permit. After five years you can apply for criminal rehabilitation. Only after ten or more years may you be considered automatically rehabilitated, and only with a single conviction on your record.

Employment and Professional Licensing

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

What Moves a Judge Within the Range

Judges have to stay inside the statutory penalty range for your offense level, but they have real discretion within it. Factors that push sentences up include a BAC well above 0.08, causing an accident, refusing a chemical test, and prior offenses within the past five years. When recent priors are present, courts are far less inclined to grant sentencing alternatives.

Mitigation works the other direction. Proactively completing an alcohol evaluation and treatment before sentencing, demonstrating sustained sobriety, maintaining steady employment, and presenting character evidence can meaningfully influence the outcome. The difference between arriving at sentencing with a completed treatment program and arriving empty-handed can be the difference between a suspended jail sentence and serving the full mandatory minimum.

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
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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