What are the laws regarding drunk driving accidents in Missouri?

On Behalf of | Aug 20, 2025 | Car Accidents

Drunk driving brings serious legal trouble, especially when it causes an accident. If police pull you over and find you impaired, the penalties can be life-changing. Knowing the laws helps you stay safe and avoid costly mistakes.

What is the blood alcohol content limit in Missouri?

Missouri law sets a blood alcohol content (BAC) limit of 0.08% if you’re 21 or older. Commercial drivers have a lower limit at 0.04%, and if you’re under 21, even 0.02% can result in charges. Law enforcement can charge you with driving while intoxicated (DWI) if your BAC is over the limit or if you’re clearly impaired.

You don’t need to fail a breath test to face charges. If an officer notices signs like slurred speech or erratic driving, that can lead to an arrest for DWI.

What happens when a crash is involved?

If you’re in an auto accident while impaired, the penalties increase quickly. Law enforcement treats these cases seriously. If someone gets hurt, you may face a felony DWI charge. If someone dies, the charge can become DWI causing death, which brings longer prison time and bigger fines.

A crash can also lead to a civil lawsuit, where the injured party demands money for medical bills, lost income, and more. Your insurance might not cover these costs if you were driving under the influence.

What other penalties are there?

A DWI conviction usually results in a license suspension. A first offense often leads to a 90-day suspension, but you might qualify for a restricted license. Repeat offenses bring longer suspensions or even permanent loss of driving privileges. You may also have to install an ignition interlock device in your car. Jail time, fines, and required alcohol treatment programs often come with a DWI conviction, especially for repeat offenders.

Repeat DWIs come with steeper consequences. With each conviction, Missouri applies harsher penalties to discourage repeat offenses. The law sends a clear message: the more times you’re caught driving under the influence, the more serious the outcome becomes.

Archives

FindLaw Network