First Offense DUI
For most people charged with a first-offense DUI in Arizona, it is their first real encounter with the criminal justice system. That alone makes the experience overwhelming. Then you learn about the mandatory jail time, the fines, the license suspension, and the ignition interlock device, and it becomes hard to think clearly about what to do next.
Here is the thing most people do not hear: first-offense DUI cases in Arizona have a wide range of possible outcomes. The worst-case scenario described in the statute is not the only option. With the right defense strategy, many first-time DUI defendants achieve outcomes significantly better than the mandatory minimums. Some cases are dismissed entirely. Others are resolved with reduced charges or alternative sentencing that avoids the harshest penalties.
What Arizona Law Says
Under A.R.S. 28-1381, a first-offense DUI in Arizona is classified as a Class 1 misdemeanor. The penalties mandated by the statute include a minimum of 10 consecutive days in jail. However, the court can suspend 9 of those days if the defendant completes an alcohol or drug screening and follows through with any recommended education or treatment programs. In practice, this means that many first-time DUI defendants serve only one day in jail.
The financial penalties are significant. Mandatory fines and fees start at approximately $1,250, which includes a $250 base fine, a $500 contribution to the Prison Construction and Operations Fund, and a $500 contribution to the Public Safety Equipment Fund. Courts typically add surcharges and additional assessments on top of these base amounts, pushing the total cost well above $1,500 in most cases.
Actual court costs often exceed these base amounts once mandatory surcharges and assessments are added (typically 15–20% higher).
Your license will face an administrative suspension of 90 days under A.R.S. 28-1385 if your BAC tested at 0.08 or above. The first 30 days are typically a hard suspension with no driving permitted at all, followed by 60 days of restricted driving privileges. If you refuse chemical testing, the implied consent suspension jumps to 12 months.
The court will also require installation of a certified ignition interlock device on any vehicle you operate for up to 12 months. Some qualifying first-time offenders with non-extreme BAC levels may be eligible for a reduction to 6 months after demonstrating full compliance.
Disclaimer: The penalty information on this page is based on Arizona Revised Statutes and is current as of March 2026. Penalties described are statutory minimums and may not reflect the full range of consequences in a specific case. Arizona DUI law changes periodically through legislative action and court decisions. This page is not a substitute for legal advice from a licensed attorney who can evaluate the specific facts of your case. Contact Arizona DUI Guys for a case-specific consultation.
Last Verified: March 2026. Penalty information should be re-verified after each Arizona legislative session at azleg.gov.
What Most People Do Not Know
Procedures were flawed, the BAC results may be inadmissible. If the state cannot prove that you were driving or in actual physical control of a vehicle, the charge may not hold up.
We recently worked with a first-time client who was found asleep at the wheel in a fast-food parking lot with the engine running. The prosecution argued actual physical control, but the totality of the circumstances—reclined seat, food wrappers on the dash, car in park—told a different story. The charge was ultimately reduced.
Arizona courts use a “totality of the circumstances” test for actual physical control cases. If you were found sitting in a parked car with the engine off, the keys in your pocket, and the seat reclined, a jury might reasonably conclude that you were sleeping it off rather than attempting to drive. Cases like these are defensible, and they are more common than people think.
There are also situations where a DUI charge can be reduced to a lesser offense. In some Maricopa County courts, a reckless driving plea under A.R.S. 28-693 is possible when the evidence is weak or the BAC was close to the legal limit. A reckless driving conviction does not carry the same mandatory minimums, interlock requirements, or license consequences as a DUI conviction.
Common Defenses for First-Offense DUI
Every case turns on its own facts, but there are several defense strategies that apply frequently in first-time DUI cases in Arizona.
Challenging the traffic stop is often the starting point. Under the Fourth Amendment, a police officer must have reasonable suspicion that a traffic violation or criminal activity has occurred before initiating a stop. If the officer pulled you over based on a hunch rather than an observed violation, any evidence obtained after the stop may be suppressible.
Testing issues are another major area. Breathalyzer machines must be calibrated and maintained according to specific protocols. Blood draws must be performed by qualified personnel using proper equipment and chain-of-custody procedures. Officers must follow the observation period requirements before administering a breath test. Failures in any of these areas can undermine the reliability of the BAC evidence.
Rising blood alcohol is a defense that applies when there is a gap between the time of driving and the time of testing. Alcohol takes time to absorb into the bloodstream. If you had a drink shortly before driving and were tested 45 minutes or an hour later, your BAC at the time of the test may have been higher than your BAC at the time you were actually behind the wheel.
Medical conditions and external factors can also affect test results. Conditions like GERD (gastroesophageal reflux disease), diabetes, and certain diets can produce falsely elevated breath test readings. Mouth alcohol from recent use of mouthwash, breath spray, or certain medications can also skew results.