Arizona DUI to the Slightest Degree Lawyers
Charged with DUI to the slightest degree under A.R.S. § 28-1381(A)(1)? Arizona can convict you even with a BAC under .08, or a .00 on drugs, if the State claims you were impaired to the slightest degree. It is a Class 1 misdemeanor with the same mandatory penalties as a .08 DUI, but it rests on opinion, not a number, which makes it highly defensible. Call us before you talk to police.
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What Is DUI to the Slightest Degree in Arizona?
Quick answer: DUI to the slightest degree under A.R.S. § 28-1381(A)(1) makes it illegal to drive while impaired to the slightest degree by alcohol, drugs, or any combination, regardless of your BAC. You can be convicted even with a reading under .08, or a breath result of .00 in a drug case, because the State relies on the officer’s observations, your driving, and field sobriety tests rather than a number. It is a Class 1 misdemeanor carrying the same penalties as a .08 per se DUI, including a minimum 10 days in jail (up to 9 suspendable), fines and fees over $1,500, a 90-day license suspension, and a certified ignition interlock. Because it turns on opinion, not a test, these cases are often very defensible.
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Former Prosecutors · Law Enforcement · Public Defenders
When you call Tamou Law Group, you reach a firm that handles criminal defense exclusively, with serious experience defending DUI to the slightest degree and other DUI cases across Arizona. Our team includes former prosecutors and law enforcement officers, so we know exactly how the State builds these cases, and where they fall apart.
At many large firms, the name on the building is a marketing figurehead, you rarely get them on the phone and your case goes to a junior associate. When you hire Tamou Law Group, your case is handled by a full team of attorneys, not associates, including Michael Tamou.
On This Page
- What Is DUI to the Slightest Degree in Arizona?
- Is DUI to the slightest degree a felony or a misdemeanor?
- Can I be convicted of DUI in Arizona with a BAC under .08?
- How much jail and what license penalties does it carry?
- How does the State prove impairment to the slightest degree?
- What are the strongest defenses to a slightest-degree DUI?
- Can a slightest-degree DUI be reduced to reckless driving?
- Slightest Degree vs. Per Se DUI
- Penalties & Sentencing
- Defenses That Work
- Our Defense Team
- FAQs
If you’ve been charged with DUI to the slightest degree in Arizona, you probably have urgent questions about what you’re facing and what comes next. Here are straight answers to the questions people ask most, with a plain-English breakdown of the law under A.R.S. § 28-1381, the penalties, and the defenses that matter most.
Is DUI to the slightest degree a felony or a misdemeanor?
DUI to the slightest degree under A.R.S. § 28-1381(A)(1) is a Class 1 misdemeanor, the same class as a per se DUI. It becomes an aggravated (felony) DUI only with an aggravator, such as a third DUI within 84 months, a suspended license, or a child under 15 in the vehicle.
Can I be convicted of DUI in Arizona with a BAC under .08?
Yes. Under the slightest-degree theory you can be convicted even with a BAC under .08, or a .00 breath in a drug case, because the charge is not based on a number. The State relies on the officer’s observations, your driving, and field sobriety tests to argue you were impaired to the slightest degree.
How much jail and what license penalties does it carry?
It carries the same penalties as any first misdemeanor DUI: a mandatory minimum 10 days in jail, with up to 9 suspendable after screening and classes, a 90-day license suspension, a certified ignition interlock for about 12 months, and over $1,500 in fines and fees. A second DUI within 84 months jumps to a 90-day minimum.
How does the State prove impairment to the slightest degree?
With the officer’s observations of your driving, your appearance and speech, your statements, and your performance on field sobriety tests. Because there is no reliable number to anchor the case, it rests heavily on subjective opinion, which is exactly what makes a slightest-degree charge defensible.
What are the strongest defenses to a slightest-degree DUI?
The best defenses attack the subjective evidence and the stop. Flawed or incorrectly administered field sobriety tests, innocent explanations for bloodshot eyes or an odor of alcohol, an unlawful stop, and no probable cause to arrest can all create reasonable doubt where there is no test number to rely on.
Can a slightest-degree DUI be reduced to reckless driving?
Often, yes. Because the charge turns on opinion rather than a number, exposing flawed field sobriety tests, innocent explanations, and an unlawful stop can lead to a reduction to reckless driving, which carries no mandatory DUI jail or interlock, or to a dismissal.
Slightest Degree vs. Per Se DUI
Both theories come from the same statute and carry identical penalties, but they are proven in completely different ways, which changes how each is defended.
| Theory | Statute | What the State Must Prove | BAC Needed? | Primary Defense |
|---|---|---|---|---|
| Slightest Degree | 28-1381(A)(1) | Impairment to the slightest degree | No | Attack officer opinion & FSTs |
| .08 Per Se | 28-1381(A)(2) | .08 or more within two hours | Yes | Attack the breath/blood test |
| Drug DUI | 28-1381(A)(3) | Drug or metabolite in the body | No | Valid Rx / no impairment |
All three are Class 1 misdemeanors with the same penalties, and the State often charges them together from one arrest.
What the State Must Prove for DUI to the Slightest Degree
To convict you of DUI to the Slightest Degree under A.R.S. § 28-1381, the prosecutor must prove every one of these elements beyond a reasonable doubt. If even one fails, the charge fails.
- 1Driving or actual physical control. You were driving or in actual physical control of a vehicle.
- 2In Arizona, on a road or area open to the public. Arizona’s DUI laws applied to where you were.
- 3Impaired to the slightest degree. Alcohol or drugs affected your ability to drive even slightly, the central and most contested element.
- 4By alcohol, drugs, or a combination. The impairment was caused by an intoxicating substance, not fatigue, illness, or nerves.
Examples of Conduct Charged as DUI to the Slightest Degree
- A DUI arrest with a breath reading under .08
- A drug-impairment DUI with a .00 alcohol reading
- A charge based mostly on field sobriety test ‘clues’
- A refusal case where the State relies on officer observations
- An impairment count charged alongside a .08 per se count
What Sentence Could You Actually Face?
A slightest-degree DUI carries the same mandatory penalties as any first misdemeanor DUI, but because it rests on opinion rather than a number, there is often more room to fight for a dismissal or reduction.
First DUI
Slightest Degree
Second DUI
Within 84 Months
Aggravated
3rd / Suspended Lic.
⚠ No Number Means More Room to Fight
Unlike a .08 per se case, a slightest-degree DUI has no test result to anchor it, the State must convince a jury that subjective observations and field sobriety “clues” prove impairment. That is a much harder burden, and exposing innocent explanations and testing errors can lead to a dismissal or a reduction to reckless driving with no mandatory DUI jail.
How We Fight Arizona DUI to the Slightest Degree Cases
Every case has weak points. These are the defenses we look at first.
Attacking the Impairment Evidence
Flawed Field Sobriety Tests. The HGN, walk-and-turn, and one-leg stand are subjective and often given incorrectly. Nerves, fatigue, medical issues, footwear, and the road surface mimic “clues” of impairment.
Innocent Explanations. Bloodshot eyes, slurred speech, or an odor of alcohol can come from allergies, exhaustion, or a single drink, not impairment to the slightest degree.
Subjective Officer Opinion. With no reliable number, the case rests on one officer’s interpretation, which we challenge with the bodycam, the reports, and cross-examination.
No Causal Link. Bad driving can come from distraction, road conditions, or unfamiliar roads. The State must tie any impairment to alcohol or drugs.
Attacking the Stop & the Case
No Reasonable Suspicion for the Stop. If police lacked a lawful reason to pull you over, the stop is unconstitutional and the evidence that follows can be suppressed.
No Probable Cause to Arrest. Without valid grounds to believe you were impaired, the arrest and everything after it can be thrown out.
No Actual Physical Control. Sitting in a parked car is not always driving. Where you were not in actual physical control, there is no DUI.
Defeating a Paired Per Se Count. Where the State also alleges a .08, undermining the breath or blood test removes its fallback and weakens the whole case.
The Experts We Bring to the Table
An extreme DUI is a science case. The State leans on a breath machine and a crime lab; we answer with specialists who challenge that science line by line.
Forensic Toxicologists
BAC & Absorption
Independently review the blood and breath results, the absorption curve, and whether the alleged number reflects your true level at the time of driving.
Breath-Test Analysts
Intoxilyzer & Calibration
Examine the machine’s calibration and maintenance logs and the 15-minute observation, exposing mouth alcohol, radio interference, and operator error that inflate readings.
Blood & Lab Experts
Gas Chromatography
Audit the blood draw, storage, fermentation risk, lab protocol, and reported uncertainty, where applying the margin of error can drop the reading below the threshold.
Medical Experts
GERD, Diabetes & Diet
Explain how acid reflux, diabetes, and low-carb diets can push a breath reading upward, independent of how much alcohol was actually consumed.
Field Sobriety Experts
NHTSA Protocol
Evaluate whether the standardized field sobriety tests were administered and scored correctly, and whether the ‘clues’ really show impairment.
Records & Discovery Specialists
Maintenance & Logs
Pull the full calibration history, repair records, and discovery the State would rather not produce, the paper trail that often reveals an unreliable machine.
Recent DUI to the Slightest Degree Defense Results
Every case is unique and results depend on the facts, but these examples reflect how our firm handles DUI to the slightest degree cases across Arizona.
Slightest-Degree DUI, .07 Breath
Charges Dismissed
With a reading under .08 and only weak field-test clues, we showed the State could not prove impairment, and the case was dismissed.
Impairment DUI, Faulty FSTs
Reduced to Reckless Driving
The walk-and-turn and one-leg stand were administered on an uneven shoulder. We undercut the clues and resolved the case to reckless driving.
Slightest-Degree DUI, Unlawful Stop
Charges Dismissed
The stop lacked reasonable suspicion. Once the roadside evidence was suppressed, the State dismissed.
Impairment DUI, Medical Explanation
Charges Dismissed
A medical condition explained our client’s appearance and HGN results, and the prosecutor dismissed before trial.
Slightest-Degree DUI, No Physical Control
Charges Dismissed
Our client was parked and not in actual physical control, defeating the DUI.
Paired DUI Counts Defeated
Reduced to Reckless Driving
After we suppressed the breath test and challenged the officer’s opinion, both DUI counts fell to reckless driving.
What Clients Say About Tamou Law
Real Google reviews from clients we have defended across Phoenix and Maricopa County. Every review is from a criminal defense client, never padded with non-legal work.
Clients reach us searching for the best DUI lawyer in Phoenix, a slightest-degree DUI attorney, help with a DUI under .08, or an A.R.S. 28-1381(A)(1) charge. Tamou Law Group defends DUI to the slightest degree and other DUI cases across Phoenix, Scottsdale, Mesa, Tempe, Chandler, Gilbert, Glendale, Peoria, and all of Maricopa County. This page is part of our Arizona dui charges practice. Call 623-321-4699 for a free, confidential consultation, 24/7.
Arizona DUI to the Slightest Degree FAQs
Quick answers to the questions we hear most about DUI to the slightest degree charges, penalties, and defenses in Arizona.
Can I be convicted of DUI under .08 in Arizona?
Yes. Under A.R.S. 28-1381(A)(1) you can be convicted of DUI to the slightest degree even with a BAC under .08, or a .00 breath in a drug case. The State relies on impairment evidence, your driving, appearance, and field sobriety tests, rather than a number.
Is a slightest-degree DUI a felony?
No. DUI to the slightest degree is a Class 1 misdemeanor, the same class as a per se DUI. It becomes an aggravated (felony) DUI only with an aggravator, such as a third DUI in 84 months, a suspended license, or a child under 15 in the car.
How does the State prove impairment to the slightest degree?
With the officer’s observations of your driving, your appearance and speech, your statements, and your performance on field sobriety tests. Because there is no reliable number, the case rests heavily on subjective opinion, which is exactly what makes it defensible.
How much jail time does it carry?
The same as any first misdemeanor DUI: a mandatory minimum of 10 days, with up to 9 days suspendable once you complete alcohol screening and classes. Many first offenders ultimately serve a single day, though a second DUI within 84 months jumps to a 90-day minimum.
Why is it charged with a .08 DUI?
The State files both counts so that if the breath or blood test is suppressed or comes back under .08, it still has the impairment theory to fall back on. Defending the case means attacking both the test and the subjective impairment evidence together.
Can a slightest-degree DUI be reduced or dismissed?
Often, yes. Because the charge turns on opinion rather than a number, exposing flawed field sobriety tests, innocent explanations, and an unlawful stop can lead to a dismissal or a reduction to reckless driving, which carries no mandatory DUI jail or interlock.
Will I lose my license?
Yes, on a conviction you face a 90-day license suspension and a certified ignition interlock for about 12 months, plus a separate MVD administrative action with a short deadline to request a hearing. We fight the license on both the criminal and the MVD side.
Are field sobriety tests reliable?
Not very. The standardized tests are subjective and frequently administered or scored incorrectly, and fatigue, nerves, medical conditions, footwear, and the road surface can all mimic impairment “clues.” We use the bodycam and reports to expose those flaws.
What if I refused the breath or blood test?
A refusal triggers a separate one-year MVD license suspension, and the State may rely even more heavily on officer observations to prove impairment. A refusal does not mean a conviction, and it is often where a slightest-degree case is most winnable.
Will I get a real attorney or a junior associate?
At many large firms the name on the door is a marketing figurehead and your case goes to a rotating associate. At Tamou Law Group your defense is handled by a full team of experienced attorneys, not associates, including founding attorney Michael Tamou. Call 623-321-4699, 24/7.
Key Takeaways
- DUI to the slightest degree (A.R.S. § 28-1381(A)(1)) makes it illegal to drive while impaired to the slightest degree, regardless of BAC.
- You can be convicted with a BAC under .08, or a .00 breath in a drug case, because the charge is not based on a number.
- It is a Class 1 misdemeanor with the same penalties as a .08 per se DUI: a minimum 10 days jail (up to 9 suspendable), $1,500+ in fines, a 90-day suspension, and an interlock.
- The State relies on officer observations, driving, and field sobriety tests, so the case rests on opinion, which makes it highly defensible.
- It is the catch-all theory almost always charged alongside the .08 per se count from the same arrest.
- A second DUI within 84 months means a minimum of 90 days jail, and a third in 84 months or a suspended-license DUI becomes an aggravated felony.
- Your case is handled by a full team of attorneys, not associates, including Michael Tamou, available 24/7 at 623-321-4699.
Two Arizona Offices, One Team
We serve all of Maricopa County and the surrounding area, with free, confidential consultations 24/7 by phone and in-person meetings at either office by appointment.
Case Results Disclaimer: The results described on this page are based on specific facts and circumstances and do not guarantee or predict a similar outcome in any future case. Every case is different. Past results do not guarantee future results. No attorney-client relationship is formed by viewing this page or submitting a contact form until a written fee agreement has been signed. Tamou Law Group, PLLC is licensed to practice law in the State of Arizona. This website is for informational purposes only and does not constitute legal advice.