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Felony DWI

Kansas City Criminal Defense

Felony DWI Defense Attorney

A third or subsequent DWI in Missouri is a felony — carrying up to 7 years in prison, a 10-year license revocation, and a permanent felony record. Prosecutors pursue these cases aggressively, and judges have limited patience for repeat offenders. Experienced defense representation is not optional.

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Felony DWI in Missouri

A DWI becomes a felony in Missouri when you have two or more prior alcohol-related enforcement contacts. Under RSMo §577.010, a third offense is a Class E felony (1–4 years) and a fourth or subsequent offense is a Class D felony (1–7 years). There is also a persistent and aggravated offender classification that can push the charge to a Class C felony (3–10 years) or a Class B felony (5–15 years) for defendants with extensive DWI histories.

Penalties

Criminal Penalties by Prior Count

  • Third offense — Class E Felony: 1 to 4 years in prison.
  • Fourth offense — Class D Felony: 1 to 7 years in prison.
  • Chronic/persistent offender — Class C Felony: 3 to 10 years — for defendants classified as chronic or persistent DWI offenders based on prior history.
  • Aggravated offender — Class B Felony: 5 to 15 years — the most severe DWI classification in Missouri.

License Consequences

  • 10-year license revocation: A third or subsequent DWI results in a 10-year revocation of driving privileges.
  • Ignition interlock device: Required for any restricted driving privilege during the revocation period.
  • Potential permanent revocation: For defendants classified as habitual offenders, the revocation may be extended indefinitely.

What Counts as a Prior?

Missouri counts all prior alcohol-related enforcement contacts — with no lookback period. This includes DWI convictions, guilty pleas, suspended impositions of sentence (SIS), and administrative license actions from Missouri or any other state. A DWI from decades ago still counts. We scrutinize every prior contact to determine whether it legally qualifies — because removing even one prior can reduce the charge from a felony to a misdemeanor, or from a Class D to a Class E felony.

Why Challenging the Priors Matters

The difference between two priors and three priors is the difference between a misdemeanor and a felony. The difference between three priors and four is a jump from 4 years maximum to 7 years. Every prior that can be challenged — because it was entered without counsel, without a valid waiver, or in a proceeding that didn't meet constitutional requirements — directly reduces your sentencing exposure. This is one of the most important and most overlooked defense strategies in felony DWI cases.

DWI Causing Death or Serious Injury

If a DWI results in the death or serious injury of another person, the charges escalate dramatically — regardless of how many priors you have. DWI-causing-death can be charged as involuntary manslaughter (Class C felony, 3–10 years) or even second-degree murder in cases involving extreme intoxication or reckless conduct. DWI-causing-serious-injury can be charged as second-degree assault (Class D felony, 1–7 years). These cases are prosecuted with the same intensity as violent crimes.

Frequently Asked Questions About Felony DWI

When does a DWI become a felony?
A third DWI offense in Missouri is a Class E felony. A fourth is a Class D felony. Persistent and aggravated offenders can face Class C or Class B felony charges. The classification depends on the number of prior alcohol-related enforcement contacts.
Will I go to prison for a felony DWI?
Prison is a real possibility. While probation may be available in some cases, prosecutors and judges treat felony DWI defendants as repeat offenders who have not responded to prior interventions. The risk of incarceration increases with each prior contact.
Can old DWI convictions be challenged to reduce the charge?
Yes — and this is one of the most effective strategies in felony DWI defense. If a prior DWI conviction was entered without counsel, without a valid waiver of rights, or in a proceeding that didn't meet constitutional standards, it may not legally count as a prior. Removing one prior can reduce the charge from a felony to a misdemeanor.
How long will I lose my license?
A third or subsequent DWI results in a 10-year license revocation. An ignition interlock device is required for any restricted driving privilege during the revocation period. For habitual offenders, the revocation may be extended indefinitely.
What if someone was injured or killed?
DWI causing death can be charged as involuntary manslaughter (3–10 years) or second-degree murder. DWI causing serious injury can be charged as second-degree assault (1–7 years). These cases are prosecuted with the same intensity as violent crimes.
How quickly should I hire an attorney?
Immediately. Felony DWI cases involve the same 15-day administrative deadline as first offenses, plus the added complexity of prior conviction analysis and felony-level defense strategy. Call The Hartley Law Firm at 816-451-0909.

Facing a Felony DWI?

A felony DWI means prison time, a 10-year license revocation, and a permanent record. Call The Hartley Law Firm today.

Book Your Free Consultation Or call now — 816-451-0909