What Happens if You’re Charged With DWI Causing Injury or Death in Missouri?

When a DWI involves an accident that injures or kills another person, the criminal charges escalate dramatically. What might otherwise be a misdemeanor becomes a felony with mandatory prison time. Missouri law treats these cases as among the most serious offenses in the criminal code.

The potential charges depend on the severity of the harm: physical injury, serious physical injury, or death. Each carries different felony classifications and sentencing ranges, but all involve mandatory minimum prison terms that eliminate any possibility of probation until substantial time has been served.

Missouri DWI Charges When Someone Is Injured

Under RSMo § 577.010, the offense of driving while intoxicated escalates to a felony when someone is injured. The statute provides:

“The offense of driving while intoxicated is… A class E felony if… While driving while intoxicated, the defendant acts with criminal negligence to cause physical injury to another person”

A Class E felony in Missouri carries two to four years in prison. The key elements are:

• The defendant was driving while intoxicated
• The defendant acted with criminal negligence
• Another person suffered physical injury
• The defendant’s criminal negligence caused the injury

Physical injury means any physical pain, illness, or impairment of physical condition. This is a broad definition that includes injuries ranging from minor to severe, as long as they don’t rise to the level of “serious physical injury.”

Penalties for DWI Causing Serious Physical Injury in Missouri

When the injuries are more severe, the charges become more serious. Missouri law distinguishes between physical injury and serious physical injury. According to the statute:

“The offense of driving while intoxicated is… A class D felony if… While driving while intoxicated, the defendant acts with criminal negligence to cause serious physical injury to another person”

A Class D felony carries up to seven years in prison. Serious physical injury means injury that creates a substantial risk of death or causes serious disfigurement, prolonged impairment of health, or prolonged loss or impairment of any bodily function.

If the injured person is a law enforcement officer or emergency personnel, the charge becomes a Class D felony regardless of whether the injury qualifies as “serious.”

What Are the Charges for DWI Causing Death in Missouri?

When a DWI accident results in someone’s death, Missouri law imposes the harshest penalties for intoxication-related offenses. The statute provides:

“The offense of driving while intoxicated is… A class C felony if… While driving while intoxicated, the defendant acts with criminal negligence to cause the death of another person”

A Class C felony carries three to 10 years in prison. But the penalties escalate even further in certain circumstances. DWI causing death becomes a Class B felony (five to 15 years) when:

• The victim is a law enforcement officer or emergency personnel
• The victim is not a passenger in the defendant’s vehicle
• Two or more people are killed
• Someone is killed and the defendant’s blood alcohol content was .18% or higher

Each of these Class B felony provisions reflects legislative judgment that certain DWI deaths warrant enhanced punishment beyond the standard Class C felony.

Mandatory Prison Time for DWI Accidents With Injuries or Deaths

Someone convicted of DWI causing injury or death faces mandatory minimum sentences that eliminate judicial discretion. Under § 577.010(6), these defendants cannot receive suspended sentences or pay fines instead of imprisonment.

The mandatory minimums depend on the defendant’s prior record:

• Prior offender: 10 days minimum (or 30 days community service)
• Persistent offender: 30 days minimum (or 60 days community service)
• Aggravated offender: 60 days minimum
• Chronic or habitual offender: Two years minimum

These minimums must be served before the defendant becomes eligible for parole or probation. The court has no authority to waive them.

DWI Causing Death vs. Involuntary Manslaughter in Missouri

When someone dies in a DWI accident, prosecutors must decide whether to charge DWI causing death, involuntary manslaughter, or both. Understanding the difference matters.

RSMo § 565.024 defines involuntary manslaughter in the first degree:

“A person commits the offense of involuntary manslaughter in the first degree if he or she recklessly causes the death of another person.”

Involuntary manslaughter is also a Class C felony, the same as DWI causing death. So why does the distinction matter?

The answer lies in the mental state required. Involuntary manslaughter requires proof that the defendant acted “recklessly.” DWI causing death requires proof that the defendant acted with “criminal negligence.”

Under Missouri law, recklessness means consciously disregarding a substantial and unjustifiable risk. Criminal negligence means failing to be aware of a substantial and unjustifiable risk when a reasonable person would have been aware. Recklessness requires conscious awareness of the risk; criminal negligence does not.

In practical terms, prosecutors often charge DWI causing death when intoxication is the primary factor. They charge involuntary manslaughter when the defendant’s conduct, beyond mere intoxication, created the risk, such as excessive speeding, street racing, or extremely dangerous driving.

Some prosecutors file both charges and let the jury decide which mental state has been proven. Others choose one charge based on the specific facts of the case.

What Does Criminal Negligence Mean in DWI Cases?

Criminal negligence is the mental state required for DWI causing injury or death charges. Missouri courts define it as failing to perceive a substantial and unjustifiable risk when the failure to perceive constitutes a gross deviation from the standard of care a reasonable person would exercise.

In DWI cases, the criminal negligence usually consists of driving while intoxicated under conditions where an accident is likely, such as high speeds, residential areas, or poor weather conditions. The prosecution does not need to prove the defendant consciously knew about the risk. They must prove only that a reasonable person in the defendant’s position would have been aware of it.

Defending Against DWI Charges Involving Injury or Death

DWI cases involving injuries or deaths are serious felonies with mandatory prison time. But prosecutors still must prove every element beyond a reasonable doubt. Defenses exist.

The prosecution must prove:

• The defendant was actually intoxicated
• The defendant’s intoxication caused the accident
• The defendant acted with criminal negligence
• The injuries or death resulted from the defendant’s conduct

Each element can be challenged. If the other driver caused the accident, causation fails. If the defendant was not actually intoxicated despite a failed field sobriety test, the intoxication element fails. If the conduct was merely negligent but not criminally negligent, the mental state element fails.

At Rose Legal Services, we examine every aspect of these cases. We investigate the accident reconstruction, review medical records, challenge chemical test results, and identify every possible defense. We know what prosecutors must prove and how to challenge their evidence.

Why You Need a DWI Attorney for Injury or Death Cases

DWI causing injury or death means felony charges, mandatory prison time, and permanent consequences. These cases require St. Louis DWI attorneys who understand both DWI law and serious felony defense.

Rose Legal Services has decades of combined experience handling DWI cases throughout Missouri. We work closely with prosecutors and are familiar with courts across the state. We understand the statutes, the science, and the defenses.

If someone is facing charges for DWI causing injury or death, they need experienced legal representation immediately. The outcome of these cases affects not just criminal penalties, but civil liability, employment, and the ability to move forward with life.

Contact Rose Legal Services today for a consultation. We are passionate about helping people protect their futures, even when they are facing the most serious charges.

Your defense starts with a conversation.