Protecting The Rights And Freedom Of The Accused

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Should you refuse a breathalyzer test in Missouri?

On Behalf of | Aug 14, 2025 | DWI, DWI Defense |

You’re driving home after dinner with friends when red and blue lights appear in your rearview mirror. Your heart races. The officer asks if you’ve been drinking and then requests a breath test. In that split second, you’re faced with a decision that could affect your license, your job and your future. Should you refuse the breathalyzer? 

If you’re unsure, you’re not alone. This is one of the most common and misunderstood moments in a DWI stop. 

Here’s what you need to know to make the smartest possible choice.

What the law says about breath tests

Missouri follows what’s called an implied consent law. That means by driving on Missouri roads, you’ve already agreed to take a chemical test if an officer has reasonable grounds to suspect you of DWI.

Refusing the test doesn’t mean you’re off the hook. In fact, refusal comes with its own set of penalties, starting with a one-year license revocation called a “Chemical Revocation.” It’s separate from the criminal DWI charge and can happen even if you’re never convicted.

What happens if you say no?

If you refuse the breathalyzer, here’s what typically follows:

  • License revocation: Automatically lose your license for a year
  • Temporary permit: You may get a 15-day permit before revocation kicks in
  • Legal hearing: You have 30 days to request a hearing to challenge the revocation
  • Impact on your case: Refusal can be used against you in court

Each of these consequences can complicate your life quickly. While refusal may seem like a good idea at the moment, it often creates more challenges than solutions.

When refusal might hurt more than help

In some cases, refusing the test gives the court the impression that you were hiding something. Prosecutors may argue that your refusal shows consciousness of guilt. It may also prevent you from qualifying for limited driving privileges down the line.

Already refused? Here’s how to take back control

If you’ve already said no to the breath test, it’s not the end of the road. However, time matters. You may be able to challenge the revocation, request a hearing or even qualify for restricted driving privileges. These options vary depending on your record and how quickly you act, so don’t wait.

Don’t decide in the dark

The decision to refuse a breathalyzer is loaded with legal and personal consequences. It might seem like a simple way to avoid evidence, but in Missouri, it often opens the door to harsher penalties. 

No matter what choice you’ve made or still have to make, speaking with an experienced DWI attorney can give you the right guidance. By getting their input, you can protect your rights, your license and your future.