Kansas City DWI Assault Attorney | Felony DWI Defense in Missouri

DWI assault Lawyer in
St. Louis, MO


Hire the leading DWI Defense Law Firm in St. Louis, MO to protect your freedom, rights, and future. Whether you have been charged with DWI or arrested, we can help.

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Last Updated: September 16, 2026

DWI Assault Lawyer Kansas City, MO

If you have been arrested or charged with DWI after a crash that injured another person, the consequences can extend far beyond a typical drunk driving case. Missouri law allows an injury-related DWI to be prosecuted as a serious felony, potentially exposing you to years in prison.

Hire an experienced DWI assault law firm in Kansas City, MO to fight felony charges involving an accident and injury. With over 100 years of combined experience aggressively defending DWI charges in Kansas City and across Missouri, Combs Waterkotte can protect your freedom, driver’s license, and future.

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Alexander B.

I owe my life to Combs Waterkotte. If not for them, I would be spending the rest of my life behind bars. There is no amount of words that can explain what they did for me and my family. Its the highest recommendation that I can give.

Alexander B.

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Dean J

If I could give Steve and his team 10 stars I would in a heartbeat. Was facing more then one felony charge and after these guys found the arresting officer violated my 4th Amendment Rights and those charges were dismissed. My family and I can't thank you enough.

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I was hands down guilty. ON VIDEO !!! In a smaller town, and a job dealing with the public, this was devastating. I made one phone call and spoke for maybe 15 minutes. I DIDN'T appear in court. I am extremely impressed. QUIETLY relieved of the matter!

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Kimberly T.

My fiance had a felony drug charge and Combs Waterkotte got it dismissed! There were no fines, court cost, nothing. Chris is loyal, professional, knowledgeable, and a man of his word. We are forever grateful for you.

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Caleb
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If I was found guilty, it would have been over 100 years in prison. They promised me that they would fight like hell and get me out of it. After everything was done, I just felt free. Like this wasn’t gonna end with me rotting away in a prison cell. I felt like I could start my life and have a fresh start.

Caleb

Assault 1st, Armed Criminal Action

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Chris
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I was facing, probably 18 years… I actually got 5 years probation and 40 hours of community service. Without Combs Waterkotte’s help, I don’t think my family could have made it without me. It was just a written book to where it's a perfect ending.

Chris

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Willy
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I went through what was supposed to be one of the top law firms in St. Louis. They said I wouldn't have no chance. I end up firing the other lawyer and everything and going with Chris. I felt like Combs Waterkotte actually did something for me and wasn't I wasn't just another number on somebody's desk.

Willy

DWI/DUI

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Alexander B.

I owe my life to Combs Waterkotte. If not for them, I would be spending the rest of my life behind bars. There is no amount of words that can explain what they did for me and my family. Its the highest recommendation that I can give.

Alexander B.

Felonies

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Dean J

If I could give Steve and his team 10 stars I would in a heartbeat. Was facing more then one felony charge and after these guys found the arresting officer violated my 4th Amendment Rights and those charges were dismissed. My family and I can't thank you enough.

Dean J

Felonies

Verify on Google
Y.I.V.

I was hands down guilty. ON VIDEO !!! In a smaller town, and a job dealing with the public, this was devastating. I made one phone call and spoke for maybe 15 minutes. I DIDN'T appear in court. I am extremely impressed. QUIETLY relieved of the matter!

Y.I.V.

Theft

Verify on Google
Kimberly T.

My fiance had a felony drug charge and Combs Waterkotte got it dismissed! There were no fines, court cost, nothing. Chris is loyal, professional, knowledgeable, and a man of his word. We are forever grateful for you.

Kimberly T.

Drug Crimes

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    Caleb
    Watch Intro Video

    If I was found guilty, it would have been over 100 years in prison. They promised me that they would fight like hell and get me out of it. After everything was done, I just felt free. Like this wasn’t gonna end with me rotting away in a prison cell. I felt like I could start my life and have a fresh start.

    Caleb

    Assault 1st, Armed Criminal Action

    Verify on YouTube
    Chris
    Watch Intro Video

    I was facing, probably 18 years… I actually got 5 years probation and 40 hours of community service. Without Combs Waterkotte’s help, I don’t think my family could have made it without me. It was just a written book to where it's a perfect ending.

    Chris

    Unlawful Use of a Weapon, Armed Criminal Action

    Verify on YouTube
    Willy
    Watch Intro Video

    I went through what was supposed to be one of the top law firms in St. Louis. They said I wouldn't have no chance. I end up firing the other lawyer and everything and going with Chris. I felt like Combs Waterkotte actually did something for me and wasn't I wasn't just another number on somebody's desk.

    Willy

    DWI/DUI

    Verify on YouTube
      Leading DWI Assault Lawyer

      A Leading DWI Assault
      Lawyer in Kansas City

      A DWI charge in Kansas City can already threaten your driver’s license, finances, reputation, and freedom. When another person is injured in an accident, prosecutors may pursue felony charges carrying significantly greater consequences.

      However, an accident involving an allegedly intoxicated driver does not automatically establish felony DWI. Prosecutors still have to prove the elements required under Missouri law, including intoxication, criminal negligence, causation, and the qualifying injury.

      The experienced Kansas City DWI defense attorneys at Combs Waterkotte investigate each part of the state’s case. We may challenge chemical testing, dispute the prosecution’s version of the collision, examine whether another driver contributed to the accident, question the classification of the alleged injuries, or identify constitutional violations affecting the evidence.

      The sooner our defense team becomes involved, the sooner we can begin preserving evidence and investigating what actually happened.

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

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      A St. Louis County man received three DUIs, all in different locations. The tough negotiation skills of the Combs Waterkotte attorney resu …

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      A St. Charles County man was charged with aggravated DUI and was facing 8 years in the Missouri Department of Corrections. After lengthy n …

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

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      DWI 3rd Offense

      Combs Waterkotte represented a Wentzville man on his 3rd DWI offense. After negotiating with the prosecutor, we were able to secure a plea …

      DWI/DUI

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      Category: DWI/DUI

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      Combs Waterkotte represented an Oakville man charged with DWI after driving his golf cart on a major thoroughfare. After being pulled over …

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      Category: DWI/DUI

      DWI

      Combs Waterkotte represented a Franklin County woman felony DWI. After conducting a thorough investigation and taking the arresting office …

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      DWI/DUI

      Category: DWI/DUI

      DWI Assault Charges Under Missouri Law

      DWI Assault Charges Under Missouri Law

      Missouri does not formally call the offense “DWI assault.” Instead, the state’s DWI statute increases the classification of a driving while intoxicated offense when criminal negligence causes injury to another person.

      Under the current version of RSMo § 577.010, DWI involving criminal negligence that causes physical injury to another person is a Class D felony. If the conduct causes serious physical injury, the offense becomes a Class C felony.

      DWI Causing Physical Injury

      DWI Causing Physical Injury

      A DWI can be charged as a Class D felony when prosecutors allege that a person drove while intoxicated, acted with criminal negligence, and caused physical injury to another person.

      That is an important distinction. The state cannot simply point to an accident, an injury, and evidence of alcohol consumption and automatically establish the felony offense. Prosecutors must connect the alleged intoxicated driving and criminal negligence to the injury.

      DWI Causing Serious Physical Injury

      DWI Causing Serious Physical Injury

      The charge becomes more serious when prosecutors allege that the accident resulted in serious physical injury. Under current Missouri law, DWI involving criminal negligence that causes serious physical injury is a Class C felony.

      Missouri’s criminal code generally defines serious physical injury as an injury creating a substantial risk of death or causing serious disfigurement or protracted loss or impairment of the function of a body part. The distinction between physical injury and serious physical injury can therefore become a major issue in determining the severity of the charge.

      What is Criminal Negligence?

      What Is Criminal Negligence?

      Criminal negligence involves more than simply making a mistake behind the wheel. Prosecutors must establish the level of negligence required by Missouri criminal law.

      They may attempt to do that with evidence of excessive speed, crossing the center line, ignoring a traffic signal, unsafe passing, distracted driving, or other conduct surrounding the collision.

      Your Kansas City DWI assault attorney can investigate whether the evidence actually supports that conclusion. Another driver’s actions, weather, visibility, road conditions, mechanical problems, construction, or unexpected hazards may tell a much different story about how the crash occurred.

      An infographic demonstrating how to challenge a DWI assault charge in Kansas City, Missouri.
      Penalties for DWI Assault

      Penalties for DWI Assault in
      Kansas City, MO

      When a DWI causes injury, the potential punishment depends in part on the severity of the alleged injury and the felony classification.

      DWI Assault AllegationClassificationPotential Prison Sentence
      DWI involving criminal negligence causing physical injuryClass D FelonyUp to 7 years
      DWI involving criminal negligence causing serious physical injuryClass C Felony3–10 years

      Missouri’s general sentencing statute authorizes up to 7 years of imprisonment for a Class D felony and 3 to 10 years for a Class C felony.

      Prison is not the only concern. Depending on the circumstances, a conviction can also create substantial fines and court costs, probation requirements, alcohol or substance abuse treatment, driver’s license consequences, ignition interlock requirements, increased insurance costs, and a felony criminal record.

      A felony conviction can also create collateral consequences involving employment, professional licensing, housing, firearm rights, and other parts of your life.

      That is why your defense should focus not only on the immediate DWI charge, but also on protecting your future after the criminal case is over.

      Possible Defenses to DWI Assault Charges

      Possible Defenses to DWI Assault
      Charges in Kansas City, MO

      Every DWI assault case is different. The right defense depends on how the accident occurred, what evidence police collected, the alleged injuries, your chemical test results, and what prosecutors claim made your driving criminally negligent.

      Potential defenses may include:

      You Were Not Intoxicated

      An officer’s conclusion that you were intoxicated is not the same as proof. Police may rely on bloodshot eyes, slurred speech, balance problems, field sobriety testing, breath results, or blood testing, but each form of evidence can have limitations.

      In a serious accident, injuries, shock, fatigue, stress, medication, or medical treatment may also affect how someone looks and behaves immediately after the collision.

      The Chemical Test Was Unreliable

      Breath and blood testing can become central evidence in a Kansas City DWI assault case. Your DWI assault defense attorney can examine whether testing procedures were followed, equipment was properly maintained, samples were collected and stored correctly, and the chain of custody remained intact.

      A number on a laboratory report should not be accepted without examining how that result was obtained.

      You Did Not Cause the Accident

      Evidence that you were intoxicated does not automatically prove that you caused the collision.

      Another motorist may have run a traffic light, changed lanes improperly, been distracted, followed too closely, or otherwise contributed to the accident. Road conditions, weather, visibility, mechanical failures, or unexpected hazards can also affect causation.

      Crash-scene photographs, surveillance footage, vehicle damage, witness statements, GPS information, and accident reconstruction may help establish what actually happened.

      Your Conduct Did Not Amount to Criminal Negligence

      A traffic mistake does not necessarily amount to criminal negligence. Prosecutors must prove the mental state required for the felony offense rather than relying solely on the seriousness of the accident.

      Your defense can examine your actual driving behavior and the circumstances surrounding the crash to challenge the state’s characterization of your conduct.

      The Injuries Do Not Support the Charge

      The difference between physical injury and serious physical injury can change the offense from a Class D felony to a Class C felony.

      Medical records, diagnostic testing, treatment histories, preexisting conditions, and expert opinions may become important when determining whether the alleged injuries satisfy the requirements of the more serious charge.

      Evidence Was Obtained Unlawfully

      A serious accident does not eliminate your constitutional rights. Your attorney can review blood draws, search warrants, vehicle searches, cellphone searches, questioning, and other investigative actions to determine whether police obtained evidence legally.

      When evidence was obtained in violation of your rights, Combs Waterkotte can seek to have it excluded from the prosecution’s case.

      Evidence in a DWI Assault Case

      Evidence in a Kansas City
      DWI Assault Case

      In a standard DWI prosecution, much of the evidence may focus on whether the driver was intoxicated. An injury accident adds several additional layers. Prosecutors may need to establish how the crash happened, who caused it, whether the defendant acted with criminal negligence, and whether the collision caused the injuries alleged.

      Evidence in these cases may include:

      • Police body-camera and dash-camera footage
      • Breath and blood alcohol testing
      • Toxicology results
      • Field sobriety testing
      • Crash-scene photographs and measurements
      • Traffic or surveillance camera footage
      • Witness statements
      • Vehicle damage and impact points
      • Event data recorder information
      • Cellphone and GPS records
      • Medical records and diagnostic testing
      • Accident reconstruction evidence

      Your Kansas City DWI defense attorney won’t rely solely on the police report to determine what happened. Officers investigating a serious crash may form an early theory based on the evidence available at the scene. Additional evidence can confirm that theory, or expose significant problems with it.

      Felony DWI Assault Attorney Kansas City, MO | Defense Lawyer

      Why Hire Combs Waterkotte

      Why Hire Combs Waterkotte for Your Kansas City DWI Assault Case?

      A felony DWI assault case requires a defense team prepared to address far more than a breath test. These cases can involve accident reconstruction, toxicology, medical evidence, constitutional issues, witness credibility, and Missouri felony law.

      At Combs Waterkotte, we have handled more than 15,000 client cases and bring decades of combined trial experience to criminal defense matters. Our firm also has multiple statewide locations, including a Kansas City office.

      We do not simply accept the prosecution’s interpretation of a serious accident. Our attorneys can investigate the crash independently, review the state’s chemical evidence, examine the alleged injuries, identify weaknesses in witness accounts, and determine whether law enforcement respected your constitutional rights.

      Depending on your case, our Kansas City defense team can:

      You are facing a serious felony accusation. Your defense should be prepared with the same level of seriousness.

      DWI Assault Attorney Kansas City, MO | Free Consultation
      Contact Combs Waterkotte

      Contact Combs Waterkotte to Start Fighting Your Kansas City DWI Assault Charge Today

      A serious accident can change your life in seconds. A felony conviction can affect it for years afterward.

      If you have been accused of causing an injury while driving intoxicated in Kansas City, do not assume the police report, BAC result, or seriousness of the accident decides your case. Prosecutors still have to prove intoxication, criminal negligence, causation, and the level of injury required for the offense they charged.

      Combs Waterkotte will investigate those issues independently and build a defense around the facts, not assumptions about you because you were involved in a DWI accident.

      Call (314) 900-HELP or contact us online today for a confidential consultation with an experienced DWI assault lawyer in Kansas City, MO. The sooner we get involved, the sooner we can begin protecting your license, freedom, and future.

      Resources

      For more information on DWI defense in Kansas City or anywhere else in Missouri, call the Combs Waterkotte criminal defense attorneys right away at (314) 900-HELP or contact us online for a confidential consultation.

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      Combs Waterkotte, Missouri and Illinois’s leading DWI/DUI law firm, has handled over 10,000 cases successfully. This ebook guides you through the DWI/DUI defense process and helps you avoid key mistakes.


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