How Do I Fight a DUI Charge in Utah?

 Posted on June 11, 2026 in DUI

Fighting a DUI charge in Utah starts with understanding that being charged is not the same as being convicted. There are ways to challenge the evidence, question how the stop was handled, and push back on the results of sobriety tests and chemical tests. If you are facing a DUI charge in 2026, the Salt Lake City, UT DUI defense lawyers at Collins Rupp, P.C. can review the details of your arrest and help you build a defense.

What Is the Legal Standard for DUI in Utah?

Utah has one of the strictest DUI laws in the country. Under Utah Code Section 41-6a-502, it is illegal to operate a vehicle with a blood alcohol concentration of 0.05 or higher. That is lower than the 0.08 limit used in most other states. It means you can be over the legal limit in Utah after fewer drinks than you might expect.

You can also be charged with DUI in Utah even if your BAC is below 0.05 if the state can show that alcohol or drugs impaired your ability to drive safely. That means the charge does not always depend on a number. An officer's observations, field sobriety test results, and other evidence can all be used to support a DUI charge regardless of what the breathalyzer shows.

What Are the Most Common Ways to Fight a DUI Charge in Utah?

There are several areas where a DUI charge can be challenged, and a strong defense often comes from attacking more than one of them at the same time.

Was the Traffic Stop Legal?

One of the first things a defense attorney will look at is whether the officer had a valid legal reason to pull you over in the first place. Under the Fourth Amendment to the U.S. Constitution, police must have reasonable suspicion that a law is being broken before they can stop your vehicle. If they did not have that, the stop may have been unlawful.

If the stop was illegal, any evidence gathered during that stop, including field sobriety test results, breathalyzer readings, and statements you made, may not be allowed in court. This is called suppression of evidence, and it can significantly weaken or even eliminate the prosecution's case against you.

Were the Field Sobriety Tests Administered Correctly?

Field sobriety tests are not foolproof, and they are not always administered the way they are supposed to be. The National Highway Traffic Safety Administration sets specific standards for how these tests must be conducted. If an officer did not follow those standards, the results can be challenged.

Common issues with field sobriety tests include uneven or sloped ground where the tests were performed, poor lighting conditions, weather factors like wind or rain, medical conditions that affect balance or coordination, and instructions that were not given clearly. Any of these factors can affect how someone performs on a field sobriety test, regardless of whether they have been drinking.

Can Breathalyzer Results Be Challenged?

Breathalyzer results are not automatically accurate, and there are several legitimate ways to challenge them. The device used to test your breath must be properly maintained and calibrated on a regular schedule. If the device was not serviced correctly or the officer was not properly trained to use it, the results may not be reliable.

Certain medical conditions can also affect breathalyzer readings. Acid reflux, diabetes, and certain diets can cause elevated readings that do not accurately reflect actual alcohol consumption. If any of these factors apply to your situation, your attorney can explore whether they affected your test result.

Utah law also allows for blood testing in DUI cases. If a blood test is taken, the handling and storage of that sample matter. If the chain of custody was not properly maintained or the sample was not stored correctly, the results can be questioned.

Does Utah's Implied Consent Law Affect Your Defense?

Under Utah Code Section 41-6a-520, Utah's implied consent law means that by driving on Utah roads, you have already legally agreed to submit to chemical testing if you are lawfully arrested for DUI. Refusing a test triggers an automatic license suspension that is separate from any criminal penalties.

However, a refusal is not without its uses in a defense strategy. Without a chemical test result, the prosecution has less direct evidence to rely on and must build their case around observations and field sobriety tests, which may present additional opportunities for challenge.

What Happens to Your License After a DUI Arrest in Utah?

When you are arrested for DUI in Utah, the Utah Driver License Division can move to suspend your license administratively, separate from the criminal case. You have a limited amount of time after your arrest to request a hearing to challenge that suspension. Missing the deadline can result in the suspension taking effect automatically. Your attorney can request a hearing on your behalf and fight to keep your driving privileges while your criminal case moves forward.

Schedule a Free Consultation With Our Davis County DUI Defense Attorneys

When facing a DUI charge, the strict standards Utah applies make it crucial to have strong legal representation from the beginning. Attorney Joseph Rupp is a retired U.S. Marine Corps officer who brings the same discipline, focus, and commitment to his clients that defined his military career. That background shapes the way he approaches every case, with determination to fight for the best possible solution. If you are ready to take on your DUI charge, contact our Salt Lake City, UT DUI defense lawyer at Collins Rupp, P.C. by calling 385-777-2753 today.