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Missouri DUI Penalties Overview

3 min read

Driving under the influence (DUI) in Missouri carries serious legal consequences that increase with repeat offenses. The state enforces both administrative and criminal penalties, depending on the circumstances and number of prior violations.

First DUI Offense

A first-time DUI in Missouri is typically classified as a Class B misdemeanor. Penalties may include:

  • Up to 6 months in jail
  • A fine up to $1,000
  • 90-day license suspension (eligible for restricted driving privilege after 30 days)
  • Requirement to complete a Substance Abuse Traffic Offender Program (SATOP)
  • Possible ignition interlock device installation

If the driver’s BAC was over 0.15%, the court may require an ignition interlock device even for a first offense.

Second DUI Offense

A second offense within five years is a Class A misdemeanor, and penalties become harsher:

  • Up to 1 year in jail
  • Fines up to $2,000
  • 1-year license revocation (minimum)
  • 5-year denial of driving privilege if second offense occurs within five years of the first
  • Mandatory ignition interlock device installation
  • Enrollment in SATOP and community service requirements

The Missouri State Traffic Violation Points System will assign 8 points to your driving record upon conviction.

Third DUI Offense and Beyond

A third DUI offense is classified as a Class D felony, with severe penalties including:

  • Up to 4 years in prison
  • Fines up to $10,000
  • 10-year license denial
  • Mandatory installation of ignition interlock
  • Extended supervised probation or parole
  • Long-term alcohol treatment requirements

Habitual offenders may face felony charges that include lifetime license revocation under Missouri law.

Aggravating Factors

Certain circumstances can elevate penalties, such as:

  • A BAC of 0.15% or higher
  • Causing injury or death while intoxicated
  • Driving with a minor in the vehicle
  • Refusal to submit to chemical testing

Missouri law allows law enforcement to issue an immediate license suspension for refusal under the state's "implied consent" law.

License Reinstatement After DUI

Reinstating driving privileges after a DUI requires multiple steps:

  • Completion of SATOP
  • Proof of SR-22 insurance for at least two years
  • Payment of reinstatement fees
  • Installation and use of an ignition interlock device for a minimum of six months

Drivers can visit Missouri DMV Office Locations Guide for help with reinstatement and documentation.

Missouri Underage DUI (Zero Tolerance)

Drivers under age 21 with a BAC of 0.02% or higher may face:

  • 30-day suspension for first offense
  • 90-day suspension for second offense
  • Mandatory alcohol education or treatment
  • Possible ignition interlock installation

For full eligibility details, refer to Missouri License Eligibility by Age.

DUI and Commercial Drivers

Commercial drivers face stricter standards. A BAC of 0.04% can result in:

  • 1-year disqualification of CDL for first offense
  • Lifetime disqualification for a second offense
  • Possible jail time and fines
  • Employment consequences

To understand licensing regulations, see Getting a CDL in Missouri.

Missouri enforces DUI laws seriously to protect road safety. Whether you’re a first-time offender or a repeat violator, the consequences impact your driving privileges, criminal record, and financial stability.