Colorado's first DUI offense carries mandatory penalties, but the severity depends on your blood alcohol content and whether anyone was injured

A first driving under the influence conviction in Colorado results in a suspended license, fines, and jail time — but the exact consequences hinge on whether your blood alcohol content (BAC) was under or over 0.15%, and whether the arrest involved an accident or injury. Colorado law distinguishes between a standard DUI (BAC 0.08% to 0.15%) and an aggravated DUI (BAC 0.15% or higher, or involving certain circumstances), and treats them differently at sentencing.

The process begins with arrest and a mandatory chemical test — breath, blood, or urine. If you refuse the test, Colorado's implied consent law triggers an automatic license suspension separate from any criminal conviction. Understanding what happens at each stage, what you must do, and what your options are can significantly affect the outcome.

Key Takeaways

  • A first DUI in Colorado results in a minimum 5-day jail sentence, a fine between $600 and $1,000, and a license suspension of at least three months, but the exact penalties depend on your BAC level and whether anyone was injured.
  • You have the right to refuse a breath or blood test, but doing so triggers an automatic one-year license suspension through the Department of Revenue, separate from any criminal court case.
  • Colorado requires a substance abuse evaluation and completion of an alcohol education course before your license can be reinstated, regardless of whether you plead guilty or go to trial.
  • The arrest report and chemical test results are discoverable evidence; you can request them from the prosecutor or your attorney to understand the strength of the case against you.
  • A first offense does not automatically result in a permanent criminal record if you complete probation and other court-ordered requirements, though the arrest itself remains on file.

Jail time, fines, and license suspension for a standard first DUI

Colorado law sets a minimum 5-day jail sentence for a first DUI conviction where BAC was between 0.08% and 0.15%. The maximum is one year in jail, though judges rarely impose the full year for a first offense without aggravating factors. The fine ranges from $600 to $1,000, plus court costs and surcharges that typically add $200 to $400 more.

Your driver's license is suspended for a minimum of three months. This suspension is imposed by the court as part of the criminal sentence. During the suspension period, you cannot drive at all — not even with a restricted license for work or medical appointments, unless you petition the court for a hardship exception, which is rarely granted for a first offense.

In addition to the criminal court suspension, the Colorado Department of Revenue imposes a separate administrative suspension if you took a chemical test and failed it (BAC 0.08% or higher). This administrative suspension runs concurrently with the criminal suspension, so you do not serve two suspensions back-to-back, but the two are distinct legal actions.

Aggravated DUI penalties when BAC exceeds 0.15% or circumstances are severe

If your BAC was 0.15% or higher, Colorado treats the offense as an aggravated DUI, which carries harsher mandatory minimums. The minimum jail sentence increases to 10 days, and the fine range becomes $900 to $1,500. The license suspension also increases to a minimum of one year.

Other circumstances that elevate a first DUI to aggravated status include driving with a child under 16 in the vehicle, causing an accident that injured someone, or having a prior DUI conviction within the past 10 years (though that would technically make it a second offense, not a first). An accident that caused property damage alone does not automatically trigger aggravation, but an accident involving injury does.

Aggravated DUI cases are more likely to result in jail time closer to the maximum, and judges have less discretion to impose probation in place of incarceration. If you are charged with an aggravated DUI, the distinction matters significantly for negotiation and sentencing.

The chemical test, refusal, and the Department of Revenue suspension

After arrest, you will be asked to take a breath, blood, or urine test to measure your BAC. You have the right to refuse, but Colorado's implied consent law means that refusal itself triggers an automatic one-year license suspension through the Department of Revenue — separate from the criminal court case. If you refuse and are later convicted of DUI, the refusal suspension and the criminal suspension run concurrently, but you still lose your license for at least one year.

If you take the test and the result is 0.08% or higher, the Department of Revenue also imposes an administrative suspension. You have seven days from the arrest to request a hearing to contest this suspension. The hearing is civil, not criminal, and focuses on whether the officer had probable cause to stop you and whether the test was administered correctly — not on whether you were actually impaired.

Many people do not know about the seven-day important date. Missing it means the administrative suspension becomes final. If you were arrested, contact a Colorado DUI attorney or the public defender's office when ready to understand your options and preserve your right to this hearing.

Substance abuse evaluation and mandatory education requirements

Before your license can be reinstated, Colorado requires you to complete a substance abuse evaluation conducted by a licensed provider. This is not optional and not something you can skip. The evaluation typically costs $200 to $400 and involves an interview about your drinking history, any prior substance use, and your current circumstances.

Based on the evaluation results, you may be ordered to complete an alcohol education course, an intensive outpatient program, or inpatient treatment. For most first offenders with no prior substance abuse history, the court orders a 12-hour alcohol education course, which can usually be completed in two to four weeks. If the evaluation recommends more intensive treatment, the court will order it, and you must complete it before reinstatement.

These requirements explore whether you plead guilty, are convicted at trial, or have charges dismissed. Some courts require the evaluation even before trial, as a condition of bail or bond. The cost is your responsibility, though some providers offer sliding-scale fees based on income.

Probation terms and what you must do to avoid a permanent record

A first DUI conviction typically results in probation lasting two to five years. During probation, you must comply with specific conditions: no driving with any alcohol in your system (zero-tolerance), regular check-ins with a probation officer, submission to random drug and alcohol testing, and completion of all court-ordered programs.

If you successfully complete probation without violation, you may be able to petition the court to seal your conviction record after a waiting period. Colorado law allows first-time DUI offenders to petition for record sealing after eight years from the date of conviction if you have no other felonies and meet other conditions. Sealing does not erase the arrest, but it removes the conviction from public view and allows you to answer "no" to most questions about criminal convictions.

Violating probation — by driving with alcohol, missing a test, or failing to complete a program — can result in probation revocation and additional jail time. The probation officer has significant discretion, so understanding your obligations and meeting important date is critical.

Discovery, evidence, and your right to see the case against you

After arrest, the prosecutor must provide you with discovery — the evidence they intend to use, including the arrest report, chemical test results, officer dashcam or body camera footage, and any witness statements. You have the right to this evidence whether you hire a private attorney or are assigned a public defender.

The arrest report describes the officer's observations: how you were driving, what you said, how you performed on field sobriety tests (walk-and-turn, one-leg stand, horizontal gaze nystagmus), and the officer's conclusion about impairment. The chemical test result is the most objective piece of evidence, but it can be challenged if the test was not administered correctly, the equipment was not calibrated, or the sample was mishandled.

Many DUI cases are resolved through plea negotiation rather than trial. Understanding the strength of the evidence against you — whether the stop was lawful, whether the tests were properly administered, whether there are gaps in the officer's observations — helps you and your attorney decide whether to negotiate or proceed to trial.

Driving privileges, restricted licenses, and what you can and cannot do

During a license suspension, you cannot legally drive in Colorado. Some states offer restricted licenses that allow driving to work or medical appointments, but Colorado does not routinely grant these for a first DUI. You can petition the court for a hardship exception, but approval is uncommon for first offenders, especially in the first few months of suspension.

If you are convicted and your license is reinstated after the suspension period, you may be required to install an ignition interlock device (IID) in your vehicle. An IID requires you to blow into a breathalyzer before the car will start. For a first DUI with BAC under 0.15%, an IID is not mandatory, but the court may order one as a condition of probation. If ordered, you pay for installation and monthly monitoring, typically $60 to $100 per month.

After reinstatement, your driving record will show the DUI conviction, which affects your insurance rates and may result in higher premiums for three to five years.

Frequently Asked Questions

Can I get my charges dismissed if I refused the breath test?

Refusal does not automatically result in dismissal, but it does eliminate the chemical test result as evidence of BAC. The prosecutor can still pursue a DUI case based on the officer's observations of impairment, witness statements, and field sobriety test results. However, without a chemical test, the case may be weaker, and your attorney can challenge the officer's conclusions more effectively.

What is the difference between a DUI and a DWAI in Colorado?

DWAI (Driving While Ability Impaired) is a separate, less serious offense that applies when your BAC is between 0.05% and 0.08%, or when you are impaired by drugs or medication but your BAC is below 0.08%. A first DWAI carries a minimum 2-day jail sentence and a $200 to $500 fine, with a license suspension of at least one month. The penalties are lower than DUI, but the process and requirements are similar.

Will a first DUI conviction show up on a background check?

Yes, a DUI conviction appears on criminal background checks used by employers, landlords, and licensing boards. If you later petition to seal the record, it will not appear on most background checks, but some government agencies and law enforcement can still access sealed records. The arrest itself remains on file even if the conviction is sealed.

How long does a DUI case typically take from arrest to resolution?

Most first DUI cases resolve within three to six months through plea negotiation. Cases that go to trial can take six months to over a year, depending on the court's schedule and the complexity of evidence. During this time, your license suspension and probation conditions remain in effect.

Can I get a DUI expunged from my record in Colorado?

Expungement (complete erasure) is not available for DUI convictions in Colorado. However, you can petition to seal the record after eight years if you meet certain conditions, including successful completion of probation and no other felony convictions. Sealing removes the conviction from public view but does not erase it from law enforcement records.