1st Offense DUI in Colorado – Laws, Penalties & Defenses

If you get convicted of a first-time DUI in Colorado, you are facing misdemeanor penalties of:

1. five days to 1 year in jail (which is usually suspended),
2. 48 to 96 hours of community service,
3. a fine of $600 to $1,000 plus court costs,
4. two years of probation,
5. a 9-month license revocation, and
6. alcohol or drug education classes.

Prosecutors charge you with a 1st offense DUI when you have no prior drunk/drugged driving convictions in Colorado or any other U.S. state or territory. Even if your earlier DUI conviction was from decades ago, Colorado counts it as a prior. 

This flowchart shows the life of a Colorado DUI case in both criminal court and the DMV:

In this article, our Denver criminal defense lawyers address in detail the following topics regarding first-time drunk/drugged driving charges in Colorado:

• 1. DUI 1st Penalties
• 2. Losing Your License
• 3. Prior Out-of-State DUIs
• 4. Lookback Period
• 5. Record Seals
• 6. What Counts as DUI
• 7. How We Help
• Frequently Asked Questions

1. DUI 1st Penalties

As discussed above, a DUI first in Colorado is a misdemeanor offense. The standard punishment is:

• Alcohol evaluation/education/treatment program (usually Level 1 for 12 hours),
• 5 days to 1 year in jail (though the D.A. may suspend any jail if you complete the alcohol program and stay sober for a year),
• A fine of up to $1,000 plus court costs,
• 2 years of probation,
• 12 DMV points on your license (which will cause your insurance premiums to increase),
• Revocation of your driver’s license for 9 months (though you may still drive with an ignition interlock device/IID in your car),¹ and
• Community service for 48 to 96 hours.

Even if you were driving safely and unimpaired, you still face these penalties as long as your BAC (blood alcohol concentration) was 0.08% or higher (“DUI per se“).

Meanwhile, if your BAC was 0.15% or higher, the DMV classifies you as a “persistent drunk driver.” This means you also have to:

• Complete a Level II alcohol education classes, which involve 24 hours of education and 26 two-hour sessions of treatment,²
• Carry SR-22 insurance, and
• Have an IID installed in your vehicles for two years.³

We believe these consequences to be excessive, though it is by design. Courts want you to suffer financially, emotionally, and reputationally in the hopes you never pick up a second-offense DUI or third-offense DUI, which have even harsher penalties. We fight to get your charge reduced or dismissed if possible so no DUI appears on your record at all. 

Note that a first-time DUI that causes injury or death is an automatic felony in Colorado, even if you have a clean criminal record otherwise.

Commercial DUI Penalties

Commercial drivers face DUI charges for driving with a BAC as low as 0.04% (called “Excess BAC CDL“). Colorado’s penalties are essentially the same as for non-commercial drivers, except that a first offense triggers a one-year CDL suspension. A second offense triggers a lifetime ban.

Many of our clients have CDLs, so we understand how just one DUI can cost them their career. That is why we tackle each case with both the short- and long-term in mind; not only do we fight to keep you out of jail and your fines low, but also we fight for your livelihood. 

DWAI Penalties

If your BAC is between 0.05% and 0.08%, Colorado police can arrest you for the lesser charge of driving while ability impaired (DWAI).⁴ The penalties for a first-time conviction are:

• From 2 days up to 180 days in jail,
• A fine of up to $500,
• 8 points against your license, and
• Community service for up to 48 hours.

It is always a victory when we can get a DUI charge reduced down to a DWAI for our clients. It triggers fewer penalties and carries less of a stigma. 

Underage DUI Penalties

Driving with a BAC of 0.02% to 0.05% while under 21 years old is prosecuted as underage drinking and driving (UDD). A first-time “baby DUI” offense is only a class A traffic infraction in Colorado. Instead of jail, the court imposes:

• A 3-month license revocation,
• 24 hours of useful public service,
• $100 in fines, and
• Alcohol/drug classes.

We do not see many UDD arrests because having a BAC of up to 0.05% rarely causes impairment. When under-21 drivers do get pulled over, their BAC is usually well above 0.05%. When that happens, they face the same DWAI or DUI charges as 21+ adults do. 

DUI of Drugs Penalties

DUI of drugs (DUID) and DUI of alcohol are punished identically in Colorado. It does not matter whether the drug was an illegal street drug like heroin or methamphetamines or drugs you have a prescription for.⁵

The fact that recreational marijuana is now legal in Colorado does not permit you to drive while high. Having a valid medical marijuana card is not a defense to DUI of marijuana charges.⁶

There is a presumption that you are impaired by marijuana if a blood test shows five nanograms or more of delta 9-tetrahydrocannabinol (THC) per milliliter. However, a police officer can still arrest you for driving impaired, no matter the level of THC in your blood.⁷

Many of our DUI of marijuana clients face additional charges of driving with an open container of marijuana. Police are trained to spot joints and bongs in the front seat during traffic stops. This is why we advise users to leave any weed at home or else keep it securely stored in the car’s trunk. 

2. Losing Your License

At some point after your first DUI arrest, you will be issued a temporary permit that is valid for seven days.⁸ The only way to fight to keep your license is to request a Colorado DMV administrative hearing within those seven days.⁹

If you lose this hearing (or fail to request a hearing at all), your license may be suspended for nine months.

If you were convicted of only a first DWAI and not a DUI, you should be able to keep your license since DWAIs only add 8 points to your DMV record. However, if you amass 12 or more points in 12 months, you may have your license suspended.¹⁰

For many of our clients, losing their license is the most catastrophic DUI penalty. Driving is often necessary to get to work, school, and medical appointments. That is why we fight our clients’ DMV cases just as aggressively as their criminal cases. 

Refusing the Chemical Test

Under Colorado’s express consent law, you are required to consent to a chemical test (breath or blood) following a DUI arrest.¹¹ If you refuse the chemical test, then:

• You will lose your license for an extra year,
• The D.A. can use your refusal as evidence of guilt in your drunk driving trial, and ¹²
• The DMV will designate you as a persistent drunk driver.¹³

This is why we tell drivers it is not worth it to refuse the chemical test. The consequences are usually worse than if you complied. 

Getting Your License Back

After a first-time DUI in Colorado, there is a way to have your driving privileges reinstated immediately, rather than waiting out the nine-month suspension period. (Though if you refused the chemical test, you would have to wait two months.)

First, you must complete an alcohol education course. Then, you must install an ignition interlock device (IID) breathalyzer in all the vehicles you drive. There is an initial installation fee, followed by monthly maintenance fees that can add up to hundreds of dollars or more.

The IID requires you to blow a clean (alcohol-free) breath into the device to start the car. The IID also requires regular rolling samples while the vehicle is operating. Any failed tests will be logged, reported, and delay your reinstatement of unrestricted driving privileges.¹⁴

The IID can be removed after only four months as long as you do not fail any breath tests. If you were designated as a persistent drunk driver for having a BAC of 0.15% or higher, you must maintain the IID for two years.¹⁵

3. Prior Out-of-State DUIs

If you have any prior conviction for a drunk/drugged driving offense in another state or U.S. territory, it will count as a prior conviction in Colorado.¹⁶ It does not matter whether your prior case was for a:

• DUI,
• DUID,
• DUI per se,
• DWAI,
• DUI causing injury (vehicular assault), or
• DUI causing death (vehicular homicide).

Some of our clients ask whether their past conviction for DWI (driving while intoxicated) or OUI (operating under the influence) from other states counts as “priors” in Colorado. The answer is yes; it makes no difference that Colorado does not use those specific names.¹⁷

4. Lookback Period

Colorado has a lifetime lookback period (also called “washout period”). This means that all your previous DUI convictions count as “priors” no matter how long ago they occurred.¹⁸

Our clients are often surprised by this because so many other states have lookback periods of seven or 10 years. We agree it is unfair that one DUI from decades ago should cause all future incidents to be charged as a repeat offense. That is one of the reasons we fight our hardest to get your charges reduced or dismissed. 

5. Record Seals

Colorado law does not permit DUI convictions to be sealed. They remain on your criminal record forever. However, if your DUI charge gets dismissed, you can petition for a seal immediately.

This is another reason we stop at nothing in pursuit of a charge reduction or dismissal for our clients. A DUI conviction is a stain on your background check that can affect your ability to get a job, professional license, lease, loan, or a scholarship. 

Note that unlike DUIs, UDDs (underage DUIs) can be expunged from your record. 

6. What Counts as DUI

In Colorado, DUI comprises being in “actual physical control” of a vehicle while either:

• Being impaired by alcohol,
• Being impaired by drugs (“DUID” or “DUI of drugs”), or
• Having a blood alcohol concentration (BAC) of 0.08% or higher within two hours of driving (“DUI per se“).

Even if your car is parked, you still face DUI charges for being intoxicated in the driver’s seat with the keys in the ignition or within arm’s reach.

We see many “sleeping DUI” cases where clients get prosecuted for sleeping off their intoxication while the car is running. In our opinion, this is unfair: It is far more responsible to sleep in a parked car to avoid driving rather than to knowingly drive while intoxicated. 

In any event, we pore over every detail of every DUI case in search of “weak links” to raise reasonable doubt. Often police misconduct alone is enough to get a DUI charge knocked down or even dropped. 

7. How We Help

Here at Colorado Legal Defense Group, we have fought literally thousands of first-time DUI charges. In our experience, we can achieve favorable results, including charge reductions and dismissals, by taking the following approach.

Gathering of Evidence:

Building your case begins with compiling all the available evidence. This includes:

• Locating and interviewing potential witnesses
• Obtaining video and audio evidence of your traffic stop
• Taking photographs of the alleged crime scene
• Obtaining arrest records
• Reviewing chemical test results
• Determining if police have properly calibrated and maintained testing equipment

Legal Research and Filing Motions:

We then use the evidence to do legal research, craft the best defense, and file requests (“motions”) with the court in preparation for trial. For example, we can ask the court to suppress evidence based on:

• Improper breath testing procedures
• Breath testing errors
• Medical conditions that lead to a false BAC result
• Improper blood testing procedures
• No reasonable suspicion for a traffic stop
• No probable cause for a chemical test
• Miranda rights violations

Negotiations:

Once prosecutors see our defense is strong, they may offer a favorable plea deal. Most drunk driving cases do not go to trial. Negotiating for a good plea bargain can help you avoid possible jail time and reduce your criminal charges.

In some cases, we can get DUI 1st charges reduced to reckless driving and avoid a DUI conviction altogether.

Frequently Asked Questions

Will I actually go to jail for a first-time DUI in Colorado?

A first-time DUI conviction in Colorado carries a possible jail sentence of five days to one year. However, for most first offenders, the court may suspend the jail sentence if you complete alcohol education or treatment, comply with probation, and satisfy the other conditions imposed by the judge. Certain aggravating factors, such as an extremely high BAC or a crash causing injuries, can make incarceration more likely.

In our experience, most first-time clients are far more worried about jail than they ultimately need to be. We are often able to negotiate outcomes that focus on treatment, community service, and probation instead of time behind bars. The key is getting involved early, presenting mitigating evidence, and demonstrating that this was an isolated mistake rather than a pattern of dangerous behavior.

Should I hire a lawyer for a first DUI?

You are not legally required to hire an attorney after a first DUI arrest in Colorado, and you have the right to represent yourself. However, a DUI case involves both criminal court proceedings and separate DMV license issues, each with strict deadlines and significant consequences.

Many people assume a first DUI is straightforward until they realize how many moving pieces there are. We help clients identify legal defenses, negotiate reduced charges, preserve driving privileges, and avoid mistakes that could have long-term consequences. Even when the evidence appears strong, experienced representation can often make a meaningful difference in the outcome.

Can a first DUI be reduced to a lesser charge?

Yes. Depending on the facts of the case, prosecutors may agree to reduce a DUI charge to DWAI (Driving While Ability Impaired) or another lesser offense. Whether a reduction is available depends on factors such as the strength of the evidence, your BAC, the legality of the traffic stop, and your criminal history.

Many of our best results come from thoroughly reviewing every aspect of the investigation rather than assuming the police did everything correctly. We’ve found that issues involving field sobriety tests, chemical testing, or constitutional violations can create opportunities to negotiate significantly better resolutions for first-time offenders.

How long will a first DUI stay on my record?

A DUI conviction remains on your Colorado criminal record permanently unless it is overturned or otherwise vacated. Unlike many other convictions, an adult DUI conviction generally cannot be sealed under Colorado law simply because you completed your sentence.

Our clients often focus only on the immediate penalties and do not realize how much a DUI conviction can affect future employment, professional licensing, and insurance costs. That is one reason we work aggressively to pursue dismissals, acquittals, or reductions. 

Will a first DUI affect my job?

A DUI conviction does not automatically cost you your job. However, it can create employment problems if your position requires driving, maintaining a commercial driver’s license, holding a professional license, or passing background checks.

From what we see, the employment consequences vary tremendously from one client to another. We have represented teachers, nurses, engineers, executives, and commercial drivers, and each faced different concerns. Part of our strategy is understanding how a conviction could affect your career so we can pursue the resolution that best protects your future.

Is it possible to beat a first DUI charge?

Yes. Prosecutors must prove every element of the DUI charge beyond a reasonable doubt. Depending on the circumstances, defenses may challenge the legality of the traffic stop, the accuracy of chemical testing, the administration of field sobriety tests, or whether you were actually impaired while driving.

We know from experience that no two DUI cases are alike. We have seen charges dismissed because officers lacked reasonable suspicion for the stop, because testing procedures were not properly followed, and because the evidence simply was not strong enough to prove impairment. A careful review of every detail often uncovers defenses that are not obvious at first glance.

Are IIDs required for all DUI 1sts? 

They will be once HB 26-1242 takes effect on June 1, 2027. Colorado law will require most people convicted of a first DUI, DUI per se, or excess BAC offense to maintain an ignition interlock-restricted driver’s license for nine consecutive months after their license is reinstated before they can obtain an unrestricted license, unless they qualify for early removal under the statute. The new law also eliminates the two -month waiting period that previously applied to certain drivers seeking an interlock-restricted license after a refusal revocation.

In our experience, ignition interlock devices allow many people to continue driving for work and family obligations, but they also add significant costs and compliance requirements. Because this new law makes interlock devices the norm rather than the exception for first-time offenders, it is more important than ever to fight the underlying DUI charge when appropriate. 

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