According to official statistics, there were over 16,000 DUI cases filed in Colorado in 2024.

However, the frequency of charges doesn’t tell the full story. The consequences of convictions in this area vary widely in terms of severity, depending on repeat offenses, the degree of intoxication, and other factors.

Overview of Colorado’s DUI Rules

Colorado’s main impaired‑driving statute is C.R.S. § 42‑4‑1301, which sets out several offense categories: DUI, DUI per se, DWAI, and UDD (underage drinking and driving).

For most drivers, a blood alcohol content (BAC) of at least 0.08% will lead to a DUI per se charge. You can still be charged with DUI if you appear impaired with a lower BAC than this; this level is just the point at which no other evidence of impairment is required to bring charges.

Repeat offenses tend to be the most significant aggravating factor in Colorado DUI cases. As we cover in more detail in the coming sections, courts tend to impose much harsher sentences on defendants with multiple intoxicated driving convictions.

The penalty for DUI in Colorado may involve a mix of jail, fines, probation, community service, mandatory alcohol or drug education and treatment, license revocation, and ignition interlock requirements.

What Are the Penalties for DUI in Colorado?

The statutory penalties for each category of DUI offense are set out below, but courts have a large degree of discretion around DUI penalties in Colorado, especially when it comes to:

  • The choice between jail and probation.
  • The length and conditions of probation.
  • The application of work release or in‑home detention.
  • Consideration of mitigating and aggravating factors.

This is one reason why it’s vital to hire an experienced DUI defense attorney. A lawyer who is familiar with local judges, prosecutors, and probation practices can present your case in a way that may lead to a more favorable outcome for you.

First‑Time DUI Penalties

A first DUI will usually be a misdemeanor. The statutory first‑offense DUI penalties in Colorado include:

  • Jail time: 5 days to 1 year. The minimum jail term may be suspended if you agree to complete treatment and evaluation related to your alcohol or drug use.
  • Fines: $600 to $1,000, plus court costs and surcharges.
  • License revocation: A 9-month administrative revocation. Drivers 21 and older may apply for immediate early reinstatement with an ignition interlock-restricted license and allow them to drive during the revocation period. Drivers under 21 must serve the full year before becoming eligible. Note that beginning June 1, 2027, HB 26-1242 will require first-time offenders to hold an interlock-restricted license for nine consecutive months after reinstatement before receiving an unrestricted license.
  • Probation: Often 1 to 2 years, including monitoring and compliance requirements.
  • Community service: Typically 48 to 96 hours.
  • Other consequences: Insurance increases, possible employment or licensing issues, and a criminal record.
  • High BAC penalty: If your BAC was 0.20% or higher at the time of driving, a minimum of 10 consecutive days in county jail is required and this minimum cannot be suspended.

Second‑Time DUI Penalties

A second DUI is still typically a misdemeanor, but Colorado law imposes harsher mandatory minimums.

Common second‑offense DUI penalties include:

  • Jail time: 10 days to 1 year, with the minimum jail time generally non‑suspendable (though work release or in‑home detention may be possible if the first offense was more than five years prior to the second).
  • Fines: $600 to $1,500, plus court costs and surcharges.
  • License revocation: Generally 1 year.
  • Probation: 2-5 years.
  • Community service: 48-120 hours.
  • Alcohol/drug treatment: Second-offense DUIs may require enrolment in a Level II Alcohol and Drug education course.
  • Ignition interlock: Required for longer periods with reinstated licenses.
  • Other consequences: Increasing impact on employment, professional licenses, and immigration status.

Third‑Time DUI Penalties

A third DUI will still typically be charged as a misdemeanor, but it will push you closer to felony territory. Courts and prosecutors tend to treat third-time cases as serious public‑safety concerns.

Typical third‑offense DUI penalties in Colorado can include:

  • Mandatory jail: 60 days to 1 year, generally with limited scope for the suspension of this minimum term, although work release or in‑home detention may still be options.
  • Fine: $600 to $1,500, plus costs and surcharges.
  • License revocation: License revocation: Generally 2 years, with stricter conditions for reinstatement. If the three convictions occurred within a 7-year period, Colorado’s habitual traffic offender statute (C.R.S. § 42-2-202) triggers a mandatory 5-year revocation.
  • Probation: 2-5 years.
  • Community service: 48-120 hours.
  • Alcohol and drug treatment: More intensive programs, depending on your risk assessment and history.
  • Ignition interlock: Multi‑year interlock requirements for any future driving privileges.
  • Other consequences: The same professional licensing, immigration, and background-check issues apply here, but to an even more elevated degree.
  • Continuous alcohol monitoring: Anyone sentenced to probation for a third or subsequent DUI, DUI per se, or DWAI offense has to submit to a minimum of 90 days of continuous alcohol monitoring using a skin-contact transdermal device.

Fourth‑Time DUI Penalties

On a fourth DUI‑related conviction, Colorado law makes a fourth DUI, DUI per se, or DWAI conviction a Class 4 felony. This effects a major upward shift in terms of both the penalties and broader long‑term impacts associated with a conviction.

You should be aware that Colorado (unlike other states) does not allow for a “lookback period” when it comes to felony DUI classification. Any prior impaired-driving conviction on your record (from Colorado or any other state), counts toward the four-offense threshold, regardless of how long ago it occurred.

Typical fourth‑offense DUI penalties include:

  • Prison exposure: A presumptive range of 2-6 years in state prison, along with 3 years of mandatory parole.
  • Felony probation: If the court grants probation instead of prison, it must order one of two options: a minimum of 90 days but not more than 180 days of straight jail time, with no good-time deductions during the mandatory 90-day period, or a minimum of 120 days but not more than 2 years served through a county-approved work release program. (see R.S. § 42-4-1307(6.5)(b))
  • High fines: Felony DUI convictions carry fines ranging from $2,000 up to $500,000.
  • License revocation: 2 years.
  • Felony record: A permanent felony conviction that can impact civil rights (such as firearm possession), as well as serious implications in terms of employment, housing, and many other aspects of life.

Aggravating Factors

High BAC

If you’re convicted of driving with a BAC of 0.15% or more, or if you refuse a chemical test following your arrest, you will be classified as a persistent drunk driver (PDD) under C.R.S. § 42-1-102(68.5), even on a first offense. This won’t upgrade a misdemeanor charge to a felony, but it triggers mandatory administrative penalties including a minimum of 2 years with an ignition interlock device and Level II alcohol treatment.

Injury or Death (Vehicular Assault/Vehicular Homicide)

If a DUI‑related crash causes serious bodily injury or death, prosecutors may file vehicular assault or vehicular homicide charges. These are separate charges, and will be tried as felonies even if the underlying DUI is a misdemeanor.

Driving With Children in the Vehicle

Per C.R.S. § 18-6-401, driving while intoxicated with a child under the age of 16 in the vehicle can lead to charges of criminally negligent child abuse. This is a separate charge to DUI, and conviction here often comes with a separate sentence to be served on top of DUI penalties.

Get Expert Legal Help With DUI Penalties in Colorado

DUI penalties in Colorado are serious at every level. If you’ve been charged, you need to do everything possible to present a strong defense and minimize the impact a potential conviction would have on your life going forward.

Contact the DUI lawyers of Moorhead Law Group today to schedule a free initial consultation about your case. During your first meeting, your attorney will discuss all potential defense strategies with you, as well as tactics to pursue a lenient sentence in the event you get convicted. We understand what you’re going through, and we’re here to help.

You can reach by phone at 303-447-1400 or fill out our online contact form.