Should You Take the Breathalyzer? Understanding Refusal Cases in Missouri DUI Stops

Getting pulled over on suspicion of DUI is stressful, and the decisions you make in those first few minutes can have serious consequences. In Missouri, one of the biggest questions drivers face is whether to take the breathalyzer test—or refuse it. The right choice depends on your situation, your driving history, and what risks you’re prepared to take. Here’s a clear, straightforward breakdown to help you understand how refusal works and when it may—or may not—be in your best interest.

Missouri’s Implied Consent Law: What It Means

Under Missouri law, simply by having a driver’s license, you’ve already agreed to chemical testing (breath, blood, or urine) if you’re lawfully arrested for suspicion of DUI/DWI. Because of this, refusing a breathalyzer at the station carries automatic penalties—even if you are never convicted of DUI.

What Happens If You Refuse the Breathalyzer

  • Automatic 12-month license revocation: Known as a “refusal revocation,” this kicks in immediately.
  • Temporary driving privileges: You typically receive a 15-day permit to give you time to act.
  • You can appeal: With an attorney, you can challenge the refusal in civil court to fight for your driving privileges.

This refusal case is completely separate from the criminal DUI charge, meaning you’re essentially dealing with two battles at once—one in criminal court and one with the Department of Revenue.

So… Should You Refuse?

The answer depends heavily on your circumstances. Here’s how it generally breaks down.

When It May Make Sense to Refuse

  • You have prior DUIs: A high BAC result makes the criminal case much harder to defend. If you already have DUI convictions, providing a breath sample could make things significantly worse.
  • You believe you'll blow high: A very high BAC reading can lead to enhanced penalties. Refusal, while carrying consequences, keeps the prosecution from having a concrete number to use against you.
  • You’re prepared to fight the refusal: With a lawyer, you can appeal the revocation and may be able to keep some form of driving privileges.

When You May Be Better Off Taking the Test

  • It’s your first DUI stop: First-time offenders often have more options and flexibility when the prosecutor doesn’t have a refusal case on top of everything else.
  • You haven’t had much to drink: If you truly believe your BAC is below the legal limit, taking the test may help clear you.
  • You rely on driving for work: A refusal instantly jeopardizes your license for a full year unless successfully appealed.

Refusal Isn’t the End—But It Is Complicated

Even though refusing a breath test triggers a 12-month revocation, you may be able to keep your driving privilege if you complete certain requirements. Those include, that are not limited to:

  • Appeal the refusal within strict deadlines
  • Request a hearing
  • Resolve the underlying criminal case and, in many instances, complete a SATOP class

An experienced DUI defense attorney can guide you through these steps and fight to protect your license, your job, and your record.

Every Case Is Different—Get Legal Guidance Early

DUI and refusal laws in Missouri are complex, and what’s “best” depends on the specifics of your situation. At Edward Alan Williams Attorney at Law, I help people in Kansas City understand their options, build a strong defense, and fight both the criminal and civil sides of a DUI case.

If you’re facing a DUI or refusal case, don’t wait—your deadlines for challenging the license revocation are very short. Call me at (816) 421-3400 for a free consultation, and let’s talk through your next steps.