Wentzville, MO felony DWI lawyer. A DWI arrest in Wentzville, MO is serious under any circumstances. But when a drunk or drugged driving charge becomes a felony, the stakes change dramatically. Instead of dealing primarily with the possibility of fines, probation, and a temporary driver’s license suspension, you could be facing years in prison, a felony criminal record, and collateral consequences that can follow you for the rest of your life.
The seriousness of a felony DWI prosecution also means there may be significantly more evidence to investigate. The state could build its case around previous DWI convictions, breath and blood tests, statements made during the arrest, police video, field sobriety tests, medical evidence, accident reconstruction, and allegations involving serious physical injury or a fatality. Each piece of evidence, and the allegations being used to justify felony treatment, deserves careful scrutiny.
At Combs Waterkotte, our criminal defense attorneys represent people facing serious DWI charges throughout the Wentzville area and across Missouri. We investigate the traffic stop, arrest, chemical testing, prior convictions, and every aggravating allegation prosecutors intend to use against you. When your freedom and future are on the line, you need someone on your side fighting to make sure the government is required to prove every element of its case beyond a reasonable doubt.
Felony DWI charges demand immediate attention. Call Combs Waterkotte at (314) 900-HELP or reach out online today for a free, confidential consultation with one of our experienced DWI defense attorneys serving Wentzville, MO.
Cases Handled
Over 10,000
Jail Days Saved
Over 1 Million
Google Reviews
500+ Perfect
Legal Experience
Over 80 Years
Legal Videos

Will a CDL DUI Automatically Suspend My Commercial Driving Privileges in Illinois?
Will a CDL DUI Automatically Suspend My Commercial Driving Privileges in Illinois? Combs Waterkotte attorney Joshua Boardman discusses everything you need to know about Illinois DUI criminal …

Do DUI Arrests Have to be Reported by CDL Drivers in Illinois?
Do DUI Arrests Have to be Reported by CDL Drivers in Illinois? Combs Waterkotte attorney Joshua Boardman discusses everything you need to know about Illinois DUI criminal charges, including …

How Does a Second DUI Affect a CDL in Illinois?
How Does a Second DUI Affect a CDL in Illinois? Combs Waterkotte attorney Joshua Boardman discusses everything you need to know about Illinois DUI criminal charges, including first-time DUI, second …

What Happens to My Job After a CDL DUI Arrest in Illinois?
What Happens to My Job After a CDL DUI Arrest in Illinois? Combs Waterkotte attorney Joshua Boardman discusses everything you need to know about Illinois DUI criminal charges, including first-time …

Can I Drive Commercially While My DUI Case is Pending in Illinois?
Can I Drive Commercially While My DUI Case is Pending in Illinois? Combs Waterkotte attorney Joshua Boardman discusses everything you need to know about Illinois DUI criminal charges, including …

Can a CDL DUI be Expunged or Sealed in Illinois?
Can a CDL DUI be Expunged or Sealed in Illinois? Combs Waterkotte attorney Joshua Boardman discusses everything you need to know about Illinois DUI criminal charges, including first-time DUI …
What You Need to Know About Felony DWI in Wentzville, MO
A felony DWI charge in the Wentzville, MO area carries consequences that go far beyond those associated with a typical first-time impaired driving offense. Whether you are facing charges because of prior DWI convictions, a serious accident, or allegations involving injury or death, understanding how Missouri classifies and prosecutes felony DWI cases is critical to protecting your future.
Below, we break down the major issues that can shape a felony DWI prosecution, including:
- What can elevate a Missouri DWI to a felony, and what circumstances Missouri law considers when determining the severity of an offense
- How repeat offenders are categorized under Missouri law, including persistent, aggravated, chronic, and habitual offender classifications
- The potential penalties for felony DWI, including felony classifications, prison exposure, and restrictions on probation or parole
- How serious injuries or fatalities can affect DWI charges and why determining who or what caused a collision can become central to the case
- How the government attempts to establish intoxication and criminal responsibility such as chemical test results, field sobriety testing, police recordings, witnesses, and crash reconstruction
- How felony DWI charges may be challenged, including problems with the initial stop, chemical testing procedures, evidence, or alleged prior offenses
- Why protecting your driving privileges requires separate attention and why both may require immediate attention following an arrest
- How a felony DWI lawyer in Wentzville, MO can help , from investigating the arrest and preserving evidence to challenging the prosecution’s allegations
The more serious a DWI charge becomes, the more important it is to examine every part of the government’s allegations. The Wentzville, MO defense attorneys at Combs Waterkotte investigate felony DWI cases from every angle, looking closely at the evidence prosecutors intend to use and the circumstances they claim justify enhanced charges.
When Does a DWI Become a Felony in Wentzville, MO?
Not every DWI in Wentzville, MO is a felony. A first-time DWI is generally prosecuted as a misdemeanor when no circumstances exist that justify more serious charges. However, under Missouri Revised Statute § 577.010, the severity of DWI charges increases when certain aggravating factors are present.
A driver’s prior intoxication-related traffic offenses can play a major role in determining the severity of a new DWI charge. Prosecutors may also look at what happened during the alleged offense itself. Factors that can increase the seriousness of a DWI case in Wentzville, MO include:
- Elevated Blood Alcohol Concentration (BAC): A BAC level of .15 or higher increases penalties and restricts alternative sentencing options.
- Prior DWI-Related Offenses: Multiple previous intoxication-related traffic offenses can result in repeat-offender classifications and potentially elevate a new DWI to a felony.
- Injury or Death: Acting with criminal negligence to cause physical injury to law enforcement, emergency personnel, or any other person elevates the charge.
- Minor Passenger: Driving intoxicated with a child under the age of 17 in the vehicle makes a first offense a Class A misdemeanor, and a subsequent occurrence a felony.
- Additional Driving or Testing Issues: Allegations involving driving while suspended or revoked or refusing a chemical test can create additional legal and licensing consequences.
As a result, a felony DWI defense can involve multiple issues at the same time. A Wentzville, MO DUI defense attorney may challenge the evidence that you were intoxicated while separately contesting the prior convictions, injury allegations, or other factors the prosecution claims support felony-level charges.
St. Charles County Resources
Below are quick links to important websites that may assist you with your legal matters in St. Charles County and Missouri.
Wentzville, MO Felony DWI Charges Based on Prior Offenses
A history of intoxication-related traffic offenses can significantly increase the severity of a new DWI charge in Missouri. Rather than treating every repeat offense the same, Missouri law establishes increasingly serious offender classifications based on a defendant’s qualifying prior record. Under RSMo § 577.023, those classifications include:
Persistent Offender
A defendant may be classified as a persistent offender when qualifying prior intoxication-related traffic offenses satisfy Missouri’s statutory requirements. This classification can elevate a DWI to a felony and expose the defendant to penalties considerably more serious than those associated with a misdemeanor conviction.
Wentzville, MO Aggravated Offender
Aggravated offender status applies to defendants with a more substantial history of qualifying intoxication-related traffic offenses or certain serious prior DWI-related offenses. The designation increases the severity of the felony charge and can result in greater potential prison exposure.
Chronic Offender in Wentzville, MO
Missouri law also recognizes chronic offenders, who face even greater criminal exposure based on their history of qualifying DWI-related offenses. At this level, prosecutors may seek substantial prison time, making careful examination of every prior conviction critical to the defense.
Habitual Offender
Habitual offender status can place a defendant among the most seriously prosecuted repeat DWI offenders in Wentzville, MO. Although the potential penalties are severe, the classification is not automatic simply because a person has multiple prior DWI cases. Prosecutors must prove that the defendant’s record contains the qualifying offenses required to establish habitual offender status.
Our DWI attorneys in Wentzville, MO carefully review prior court records, charging documents, plea records, dispositions, and other relevant evidence to determine whether the prosecution can legally establish the repeat-offender classification alleged in your case.
Missouri Felony DWI Penalties by Offender Classification
The potential punishment for DWI in Missouri can change dramatically based on a defendant’s prior intoxication-related traffic history. While prior offender status generally remains a misdemeanor, qualifying as a persistent offender in Wentzville, MO can result in felony prosecution. From there, aggravated, chronic, and habitual offender classifications carry increasingly serious felony designations and potential terms of imprisonment.
| Offender Status | Typical Prior Offense Requirement | Level of Offense | Possible Prison Term | Minimum Time Before Parole or Probation |
|---|---|---|---|---|
| Prior Offender | One prior intoxication-related traffic offense within the applicable 5-year period | Class A misdemeanor | Up to 1 year | Generally 10 days, subject to statutory community service or treatment alternatives |
| Persistent Offender | Two or more intoxication-related traffic offenses committed on separate occasions, or certain prior intoxication-related offenses involving injury or death | Class E felony | Up to 4 years | Generally 30 days, subject to statutory community service or treatment alternatives |
| Aggravated Offender | Three or more intoxication-related traffic offenses, or qualifying combinations involving prior DWI offenses that caused injury or death | Class D felony | Up to 7 years | At least 60 days |
| Chronic Offender | Four or more intoxication-related traffic offenses, or certain combinations of prior offenses involving injury or death | Class C felony | 3 to 10 years | At least 2 years |
| Habitual Offender | Five or more intoxication-related traffic offenses, or certain combinations of prior offenses involving injury or death | Class B felony | 5 to 15 years | At least 2 years |
Keep in mind: The number of prior DWIs alone does not always determine offender status. Missouri law also considers whether earlier intoxication-related traffic offenses involved injuries or deaths. For example, a person may qualify as a persistent, aggravated, chronic, or habitual offender with fewer prior offenses when qualifying injury- or death-related offenses are part of their record.
The consequences of a felony DWI in Wentzville, MO can continue long after the criminal sentence ends. A conviction may interfere with employment, professional licensing, housing, education, immigration consequences, firearm rights, and other aspects of your life. Repeat DWI convictions can also make any future intoxication-related driving allegation substantially more dangerous.
With so much potentially at stake, getting a knowledgeable Wentzville, MO DWI defense attorney involved early can be critical to protecting your rights and evaluating the charges against you.
When a DWI Causes Serious Physical Injury in Wentzville, MO
A DWI case in Wentzville, MO can carry much greater consequences when the state claims that intoxicated driving resulted in serious physical injury to another person. These allegations can arise from crashes involving:
- Other drivers
- A passenger
- A pedestrian
- A cyclist
- A motorcyclist
- Emergency responders
- A worker in a highway or construction zone
- Other people injured in or around the crash
The existence of an injury does not automatically establish criminal responsibility. Prosecutors still have to connect the defendant’s alleged intoxication and conduct to the injury. That makes causation a critical issue in many felony DWI accident cases.
A collision may have involved another motorist speeding, disregarding a traffic signal, making an unsafe lane change, or engaging in other conduct that contributed to the accident. Poor road conditions, limited visibility, mechanical problems, and additional circumstances can also influence how and why a crash occurred. A thorough felony DWI defense therefore needs to look beyond BAC results and examine the evidence surrounding the collision itself.
DWI Resulting in Death in Wentzville, MO
A fatal collision can turn a DWI prosecution into an exceptionally high-stakes criminal case. The loss of life understandably makes these cases emotionally charged, and prosecutors may pursue severe penalties. For the person accused, a conviction can mean substantial incarceration and consequences that permanently alter their future.
But a fatality does not eliminate the prosecution’s burden of proof. A defense investigation may examine:
- The sequence of events leading to the crash
- Vehicle speeds before impact
- Braking and steering inputs
- Traffic lights, signs, and right-of-way issues
- Road and weather conditions
- Surveillance or dash-camera footage
- Vehicle impact patterns and physical damage
- Event data recorder information
- Eyewitness accounts
- Toxicology results
- Accident reconstruction reports
- The actions of other drivers involved in the collison
The difference between being involved in a fatal accident and criminally causing a death while intoxicated is legally significant. When necessary, our DWI defense attorneys in Wentzville, MO can work with investigators and expert witnesses to scrutinize the government’s reconstruction of the collision.
Building a Felony DWI Case: Evidence Prosecutors May Use in Wentzville, MO
Felony DWI cases can involve a much broader investigation than a routine impaired-driving arrest. Depending on the circumstances, law enforcement and prosecutors may attempt to build their case using evidence such as:
- Observations made by responding officers
- Dash-cam video
- Body-camera recordings
- Field sobriety test results
- Breathalyzer results
- Blood or urine test results
- Medical and hospital records
- Eyewitness accounts
- 911 calls and dispatch recordings
- Surveillance footage
- Vehicle data
- Cellphone records
- Crash reconstruction evidence
- Prior DWI records
None of this evidence should automatically be accepted at face value.
Breath and blood testing may contain procedural or scientific problems. Video footage may tell a different story than an officer’s written report. Witness recollections can be inaccurate or inconsistent. Field sobriety tests may not have been administered correctly, and accident reconstruction conclusions can depend heavily on the information and assumptions used by investigators. Each piece of evidence should be examined carefully before it is relied upon to support a felony conviction.
How Reliable Are Breath and Blood Tests in Wentzville, MO DWI Cases?
Breath and blood test results can become a central part of a felony DWI prosecution, but those results should still be examined carefully. Accurate chemical testing depends on proper equipment, trained personnel, established procedures, appropriate sample handling, and reliable laboratory analysis. A breakdown in any part of that process can call the resulting BAC evidence into question.
Potential areas of concern can include:
- Improper breathalyzer calibration
- Whether the testing equipment was functioning correctly
- Whether required testing procedures were followed
- Possible contamination of blood evidence
- Improper storage or preservation of a sample
- Chain-of-custody problems
- The amount of time between driving and testing
- Mistakes during laboratory testing or analysis
- Medical conditions that may affect test results
- Questions about how toxicology findings were interpreted
Blood evidence can take on added importance when felony DWI charges stem from a serious collision, particularly if a blood sample was obtained while the defendant was receiving medical treatment. A Wentzville, MO felony DWI lawyer can examine why the blood was drawn, how the sample was obtained and preserved, who handled it, what testing procedures were followed, and whether prosecutors have a lawful basis for introducing the results as evidence.
Charged with felony DWI in Wentzville, MO? When you select Combs Waterkotte a felony DWI lawyer in or around Wentzville, MO, you’re not only selecting a leading felony DWI defense lawyer in Wentzville, MO and beyond – you’re safeguarding your rights, your freedom, and your future. In addition to knowledgeable felony DWI defense lawyers, our legal team is available 24/7 and provides expertise in the following areas for residents in Wentzville, MO:
Potential Strategies for Defending a Felony DWI in Wentzville, MO
Every felony DWI case presents different legal and factual issues. The strongest defense strategy will depend on the circumstances surrounding the traffic stop or accident, the observations made by law enforcement, the chemical testing involved, and the specific allegations prosecutors are using to pursue felony-level charges.
Depending on those circumstances, defense strategies for winning your DWI case may focus on issues such as:
The Traffic Stop Was Unlawful
A police officer cannot simply stop a motorist without sufficient legal justification. When the circumstances do not legally justify the traffic stop in Wentzville, MO, a defense attorney may challenge evidence law enforcement obtained afterward.
If critical evidence is suppressed, prosecutors may have difficulty proceeding with the case.
Breath or Blood Evidence Cannot Be Trusted
Breath and blood tests can play a major role in a felony DWI prosecution, but these testing methods are not infallible. A defense investigation can examine the testing equipment, operator qualifications, laboratory procedures, sample handling, maintenance records, and other factors that may affect the reliability of the results.
The Evidence Does Not Establish Impairment
A person can appear tired, confused, nervous, injured, or unsteady for reasons unrelated to intoxication.
Video recordings can be particularly valuable because they allow the defense, prosecutors, and ultimately a court or jury to compare what actually occurred with what officers described in their reports.
The State Cannot Prove Causation
When a felony DWI prosecution involves serious injury or death, establishing intoxication may be only one part of the government’s case. Prosecutors may also need to prove that the defendant’s conduct legally caused the resulting harm.
Accident reconstruction evidence may show that another driver, road hazard, mechanical defect, or unavoidable circumstance caused or contributed to the collision.
Challenging Prior-Offense Enhancements
When felony status depends on previous intoxication-related offenses, those prior cases deserve careful examination.
The prosecution must establish that the prior offenses satisfy the requirements for the enhancement being sought. Questions about the nature of a prior conviction, available court records, or whether an offense legally qualifies may affect the severity of the current charge.
Steps to Take After Being Arrested for Felony DWI in Wentzville, MO
What you do following a felony DWI arrest can have consequences for both the criminal prosecution and your driving privileges. If you have been arrested for felony DWI in or around Wentzville, MO, consider taking the following steps:
Step 1: Avoid Answering Questions About the Case Without Your Attorney
After a felony DWI arrest, you may be contacted by police, investigators, or other authorities looking for additional information. Even statements that seem harmless could potentially be used to strengthen the prosecution’s case. Exercise your right to remain silent and speak with your Wentzville, MO felony DWI defense attorney before answering questions about the incident.
Step 2: Do Not Post About the Arrest or Accident on Social Media
Avoid discussing your DWI arrest, the events leading up to it, an accident, or anyone else involved on social media. Photos, comments, messages, check-ins, and other online activity could potentially become evidence. It is generally safest to keep the details of your pending case offline.
Step 3: Protect and Preserve Potential Evidence
Keep photographs, videos, text messages, receipts, rideshare information, location records, and other materials connected to the events before or after your arrest. Your attorney may be able to use this information to establish a timeline, locate witnesses, or challenge portions of the prosecution’s account.
Step 4: Keep All Court Paperwork and Driver’s License Documents
Keep every document you receive from law enforcement, the court, or Missouri driver’s license authorities. Your criminal prosecution and administrative driver’s license proceedings are separate matters, and each may involve its own requirements and deadlines.
Step 5: Begin Building Your Defense as Soon as Possible in Wentzville, MO
The evidence in a felony DWI prosecution can range from chemical testing and prior court records to crash reconstruction, video recordings, and witness testimony. Contacting an experienced Wentzville, MO felony DWI attorney early gives your defense team more time to preserve evidence, investigate the allegations, identify potential weaknesses, and prepare a strategy for the proceedings ahead.
The government may begin preparing its case immediately after an arrest. Acting quickly gives your defense more time to investigate independently, preserve evidence that could otherwise disappear, and prepare for both the criminal and driver’s license proceedings ahead.
Why Choose Combs Waterkotte for a Felony DWI Case in Wentzville, MO?
A felony DWI case can threaten years of your life. It demands more than a routine approach to criminal defense.
At Combs Waterkotte, we understand that the government’s version of events is only one side of the story. Police reports, chemical test results, prior convictions, and accident allegations all need to be examined rather than simply accepted.
When we represent someone facing felony DWI charges in Wentzville, MO, our defense team can:
- • Investigate the circumstances leading to your arrest
- • Determine whether police had a lawful basis to stop your vehicle
- • Examine the administration and interpretation of field sobriety tests
- • Analyze breath, blood, and urine test evidence
- • Review prior Wentzville, MO DWI cases prosecutors are attempting to use for felony enhancement
- • Investigate allegations involving serious physical injury or a fatal collision
- • Compare police reports with dash-camera and body-camera recordings
- • Interview witnesses
- • Consult appropriate experts
- • Challenge illegally obtained or unreliable evidence
- • Utilize a client-centered approach, negotiate with prosecutors when doing so serves your interests
- • Remain prepared to take the case to trial when prosecutors are unwilling to offer a fair resolution
Your defense should reflect the evidence, allegations, and circumstances unique to your Wentzville, MO felony DWI case. That is the approach Combs Waterkotte brings to every stage of the process.

Speak With a Felony DWI Lawyer in Wentzville, MO Today
A felony DWI charge is not simply a more serious traffic case. It can threaten your freedom, your driver’s license, your career, your reputation, and your future. And the more serious the allegation becomes, the more important it is to scrutinize every part of the government’s case.
The attorneys at Combs Waterkotte represent people facing serious and felony-level DWI charges throughout Wentzville and Missouri. We investigate the circumstances behind the felony allegation, including prior convictions, BAC evidence, chemical testing, crashes, injuries, and other factors prosecutors claim justify enhanced charges. From there, we build a defense around the evidence and what actually occurred, not assumptions based on the arrest.
Call Combs Waterkotte at (314) 900-HELP or contact us online today to discuss your case with an experienced Wentzville, MO felony DWI lawyer.

