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First DWI Offense Lawyer Missouri

Facing your first DWI charge? Combs Waterkotte can help.

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Last Updated: February 27, 2026

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First DWI Offense Lawyer
Missouri

Facing your first DWI offense in Missouri is a tough ordeal. It’s not uncommon to wonder, “How much trouble am I in? Will they take my license away? Will I go to jail?” The gravity of the situation can be taxing for new and veteran drivers alike. But one of the single most important things you can do when facing your first DWI is to hire a criminal defense attorney.

Combs Waterkotte’s experienced team of lawyers has helped thousands of clients navigate their first DWI. From developing a defense strategy specifically for your case to reducing or dismissing your charges altogether, Combs Waterkotte will fight every step of the way for the best possible outcome to minimize the impact of your first DWI on your life.

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Missouri First-Offense DWI Lawyer

Missouri First-Offense DWI Lawyer

Your First DWI can feel like the end of the world — but it doesn’t have to be. The best way to get out in front of the situation, though, is to know your rights during a DWI traffic stop, cooperate with police officers, and get in touch with a lawyer as soon as you’re able to. A little know-how and some legal assistance goes a long way for your first DWI.

Facing your first DWI charge in Missouri? Call Combs Waterkotte at (314) 900-HELP or reach out to us online. Our experienced Missouri DWI lawyers will review your case and see what they can do to help.

Combs Waterkotte is an award-winning criminal defense law firm serving all of Missouri. We can help you with all the legal hurdles surrounding your first DWI offense. We’ll take you through both the criminal and civil processes involved in a DWI to help you fight your court case and keep your driving privileges.

What Is a First DWI Offense in Missouri?

What Is a First DWI Offense in Missouri?

Under RSMo §577.001, “driving while intoxicated” simply means operating a motor vehicle while under the influence of alcohol or any other controlled substance (like marijuana, benzodiazepines, methamphetamine, etc.). Missouri puts repeat offenders into categories:

If you don’t fit into any of these categories and you don’t have a prior DWI charge on your criminal record, you’re a first-time offender. Possible penalties for a first-time DWI offense range from the suspension of your driver’s license to a year-long jail sentence.

Missouri DWI Laws: Blood Alcohol Content Limits and Implied Consent

When facing your first DWI offense in Missouri, it’s important to know and understand the laws at play. Two of the most important are the implied consent law and blood alcohol content limits (i.e., the amount of alcohol in your blood that puts you over the legal threshold).

Implied Consent

The implied consent law laid out in RSMo §577.020 essentially states that, by operating a motor vehicle in Missouri, you automatically agree to chemical tests of your blood, breath, saliva, or urine if:

  • You’re arrested under reasonable suspicion of DWI
  • You’ve been involved in a car accident that caused death or serious injury
  • You’re under 21 and have been pulled over under reasonable suspicion of DWI
  • You’re under 21, have been pulled over for a traffic violation, and the officer has reason to believe you are intoxicated after interacting with you
  • You’re under 21, have been stopped at a sobriety checkpoint, and police have reason to believe you are intoxicated

Drivers under the age of 21 experience much higher scrutiny under implied consent. If you’re 21 or older, implied consent in Missouri only applies after you’ve been arrested or involved in a serious or fatal wreck.

Blood Alcohol Content Limits

When you drink alcohol, it gets into your bloodstream, increasing the concentration of alcohol in your blood. The amount in your bloodstream is measured by “hundredths of a percent by weight.” The higher the number, the more alcohol there is in your blood (and the more intoxicated you are).

Missouri’s blood alcohol content limits outlines thresholds that apply to certain circumstances:

  • .08% is the standard legal limit
  • .04% is the legal limit for individuals operating a commercial vehicle
  • .02% is the legal limit for individuals under 21
Can I Refuse Tests During a First DWI Offense?

Can I Refuse Tests During a First DWI Offense?

Whether or not you’re allowed to refuse sobriety tests is one of the most important things to understand if you’re facing your first DWI offense.

When it comes to field sobriety tests (e.g., walking heel-to-toe, balancing on one leg, touching your finger to your nose, etc.), you should always refuse them in Missouri. They are completely voluntary, and law enforcement officers do not have a legal right to administer them.

Blood and breath tests, though, are a bit more complicated.

While you technically consent to testing by law by merely operating a vehicle at all in Missouri, you are allowed to refuse implied consent. At that point, a police officer must arrest you in order to test you. Even still, Combs Waterkotte recommends refusing any test without a warrant. If police do eventually acquire a warrant for a blood, urine, breath, or saliva test, you should comply at that point (but not before).

Penalties for a First DWI Offense in Missouri?

Penalties for a First DWI Offense in Missouri

Provided you don’t severely injure or kill someone while intoxicated, Missouri’s penalties for a first DWI offense aren’t unreasonably harsh, especially with a good first-time DWI attorney handling your case. That said, there are still consequences you should be aware of for your first DWI offense.

Suspended Imposition of Sentence (SIS)

For many first-time DWI offenses, the result is a suspended imposition of sentence (SIS). This essentially means that you enter a guilty plea in exchange for avoiding a conviction or jail sentence. At that point, the court places you on probation for your DWI. A probation violation, though, may result in having to serve your sentence.

Class B Misdemeanor

Under RSMo §577.010, a Class B misdemeanor is the standard outcome for a first DWI offense. The penalties for a Class B misdemeanor include up to 6 months in jail, a fine up to $1,000 (plus potential court costs), probation, and possible community service.

License Consequences

In Missouri, a DWI actually results in two separate sets of legal proceedings: the criminal case (which the courts handle) and an administrative license suspension (handled by the Missouri Department of Revenue).

For your first DWI, you lose your license for 90 days. For the first 30 days, you can’t drive, and for the following 60, you may drive with restricted driving privileges. If you refuse a chemical test during your DWI stop, you also face a 1-year license revocation under RSMo §302.574.

According to Missouri law, you have 15 days to challenge your license revocation through an administrative hearing. Be sure to contact a DWI administrative hearing lawyer as soon as possible after you’ve been charged.

Additional Penalties

Aggravating Factors

In most instances, a first-time DWI offense in Missouri is a Class B misdemeanor. But there are additional factors that may result in harsher penalties, like:

  • A blood alcohol content higher than .15% (Class A misdemeanor, up to 1 year in jail)
  • An accident involving an injury
  • Causing a serious injury is a Class D felony with up to 7 years in prison and a fine up to $10,000
  • Causing a death is a Class B felony with between 5 and 15 years in prison
  • Excessive speeding (doesn’t result in additional penalties, but may support probable cause, justify harsher Class B misdemeanor sentencing, or come with additional traffic tickets)
First Offense DWI Lawyer Missouri | DWI Attorney Missouri
Can a First DWI Be Reduced or Dismissed in Missouri?

Can a First DWI Be Reduced or Dismissed in Missouri?

A good criminal defense lawyer may be able to get your first DWI offense dismissed entirely. A more likely outcome in these kinds of cases, though, is reduction in your sentence. First-time DWIs are often reduced to careless and imprudent driving, and a reduction to this (or another) charge is more likely when:

  • Your blood alcohol content is close to the legal limit of .08%
  • You didn’t cause an accident
  • You don’t have a prior criminal record
  • You have a strong employment history
  • You have a clean driving history
  • There were procedural issues with any field sobriety tests you took

A first DWI offense may also result in the requirement to complete a diversion program.


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Common Defenses Against First-Offense DWI Charges in Missouri
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Common Defenses Against First-Offense DWI Charges in Missouri

When you’re charged with your first DWI in Missouri, it’s important to start developing your legal defense right away. Combs Waterkotte has handled hundreds of DWI clients and uses proven legal defense strategies to combat DWI accusations to achieve desirable case outcomes.

First-Offense DWI Defense Strategies in Missouri:

  • Illegal or traffic stop
  • Lack of probable cause for arrest
  • Faulty field sobriety tests
  • Improperly administered breath test
  • Breathalyzer not properly calibrated
  • Fourth and Fifth Amendment violations
  • Unreliable officer observations
  • Break in blood sample chain of custody

  • DWI

    Charge

    DWI

    Result

    Not Guilty Verdict

    Combs Waterkotte represented a Robertsville, MO man on a felony charge of DWI. At trial, we challenged the way the officer conducted his standardized field so …

    Charge

    DWI

    Result

    Not Guilty Verdict

  • DWI

    Charge

    DWI

    Result

    Dismissed

    Combs Waterkotte represented a college student on a DWI charge. During the administrative hearing, which deals with license suspension, we challenged the arre …

    Charge

    DWI

    Result

    Dismissed

  • Felony DWI/DUI

    Charge

    Felony DWI

    Result

    Reduced

    A St. Louis County man was charged with felony DWI/DUI because of multiple arrests in his past. After lengthy plea negotiations, Combs Waterkotte was able to …

    Charge

    Felony DWI

    Result

    Reduced

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    Can My First DWI Be Expunged from My Record in Missouri?

    Can My First DWI Be Expunged from My Record in Missouri?

    According to RSMo §610.140, your first DWI in Missouri can be expunged under certain conditions:

    • It has to have been your first DWI offense
    • You must not have been driving a commercial vehicle
    • The DWI must not have been a felony

    Missouri requires you to wait a period of 10 years before you can start the expungement process. During that time, you must also have no additional DWIs, no felonies or misdemeanors, and fulfill all the penalty requirements of your first DWI charge.

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    How Combs Waterkotte Can Help with Your First DWI Offense

    How Combs Waterkotte Can Help with Your First DWI Offense

    You don’t have to face your first DWI charge alone. Combs Waterkotte utilizes over six decades of experience and expertise and statewide resources in Missouri to take on any first-time DWI charge. We’ll thoroughly review the details of your case, prepare a legal defense tailored to you, and keep you informed on every aspect of your case from consultation to conclusion.

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    Speak With a Missouri First-Offense DWI Attorney Today

    Speak With a Missouri First-Offense DWI Attorney Today

    Don’t waste any time waiting to address your first DWI charge. Whether you’re in St. Louis, Kansas City, or anywhere else in Missouri, call Combs Waterkotte today at (314) 900-HELP, or contact us online. We’re ready to help defend your rights, your freedom, and your future.

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