Most DUIs in Coconino County are misdemeanors, even the high-BAC ones. Aggravated DUI is the line where that changes — where the case moves from Flagstaff Municipal Court to Coconino County Superior Court, from jail to prison, and from a bad year to a felony record that follows you through every job application, professional license, and housing form for the rest of your life. What’s striking is that the triggers usually have nothing to do with how much you drank.
This is the tier where getting a lawyer early matters most. Aggravated DUI carries mandatory prison and a three-year license revocation, and it’s prosecuted by the County Attorney rather than a city prosecutor. If any of the four triggers below apply to your situation, treat the free consultation as urgent — and don’t discuss the case with anyone else first.
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The four triggers under A.R.S. § 28-1383
A DUI becomes aggravated — a felony — when one of these is present, regardless of your BAC. The statute is A.R.S. § 28-1383.
- Driving under the influence while your license is suspended, revoked, or canceled — a class 4 felony. This is the most common trigger by far, and the cruelest, because it often catches people whose license was suspended by an earlier DUI they thought they’d finished dealing with. If your privilege is suspended and you drive impaired, the charge escalates automatically.
- A third DUI within 84 months — a class 4 felony. Seven years, measured from the dates of the offenses rather than the convictions. Prior standard, Extreme, and aggravated convictions all count toward the three.
- A DUI with a passenger under 15 years old — a class 6 felony. The one trigger that isn’t a class 4. It applies even at a standard BAC, and it commonly arises in the least “criminal” circumstances imaginable: a parent driving kids home.
- Driving the wrong way on a highway while impaired. Treated as aggravated because of the danger involved, independent of any prior record.
Notice what isn’t on that list: a high BAC. A 0.25 reading with no priors, a valid license, and no child in the car is a Super Extreme misdemeanor, covered in our Extreme DUI guide — not a felony. Conversely, a 0.09 on a suspended license is a felony. The triggers are structural, not chemical.
What a felony DUI actually carries
The consequences separate into two layers, and the second one is the one people underestimate.
The sentence. A class 4 felony aggravated DUI carries mandatory prison — for a first aggravated offense, generally a minimum term measured in months before any release eligibility, with the exact figure depending on the class and any prior felony record. It also carries a three-year license revocation, substantial fines, screening and treatment, and an ignition interlock requirement of 24 months or more once you’re eligible to drive again.
The felony record. This outlasts the sentence by decades. A felony conviction affects firearm rights and voting rights while the sentence is being served, appears on every background check indefinitely, can end or block careers in nursing, teaching, commercial driving, aviation, law, and finance, and carries serious immigration consequences for non-citizens — potentially including removability. For many defendants the prison term is survivable and the record is the part that reshapes their life.
Where these cases are heard
Felony DUIs are prosecuted by the Coconino County Attorney in Coconino County Superior Court in Flagstaff — a different system from the municipal and justice courts that handle misdemeanor DUIs, with a grand jury or preliminary hearing, formal discovery, and a longer timeline. Misdemeanor DUI experience isn’t the same as felony experience, and it’s a fair question to ask any attorney you consult.
How aggravated DUI cases are defended
An aggravated DUI has two independent parts, and both are attackable:
- The underlying DUI. Everything that applies to any DUI applies here — the lawfulness of the stop, field sobriety administration, breath instrument calibration and the observation period, blood chain of custody, and rising-BAC timing. If the DUI itself doesn’t hold, the aggravated charge collapses with it.
- The trigger. This is the part unique to felony cases, and it’s often where the leverage is. On a suspended-license charge, the state generally must show you knew or should have known your privilege was suspended — and notice failures are real, especially when MVD mail went to an old address. On a third-offense charge, the prior convictions and their dates have to be properly proven, and the 84-month math computed from the right dates. On an under-15 charge, the passenger’s age is an element that must be established.
Knocking out the trigger doesn’t necessarily end the case, but it can drop it from a felony to a misdemeanor — which is frequently the single most valuable outcome available, and the reason these cases justify an experienced defense even when the drinking itself isn’t in dispute.
If the trigger is a suspended license
This deserves its own note because it’s so common and so preventable. If you’re currently suspended — from an earlier DUI, an unpaid judgment, an MVD action you may not have registered — do not drive, at all, until you’ve confirmed your status directly with MVD. A short trip while suspended converts an ordinary bad night into a felony. Our license suspension guide explains how to check where you stand and how restricted driving privileges work.
Frequently asked questions
What makes a DUI a felony in Arizona?
Four triggers under A.R.S. § 28-1383: driving impaired on a suspended, revoked, or canceled license; a third DUI within 84 months; having a passenger under 15 in the vehicle; or driving the wrong way on a highway while impaired. A high BAC alone does not make a DUI a felony.
Will I definitely go to prison for aggravated DUI?
Aggravated DUI carries mandatory prison rather than jail, and class 4 felony convictions generally require a minimum term before release eligibility. The precise exposure depends on the felony class, your prior record, and how the case resolves — which is exactly why attacking either the underlying DUI or the aggravating trigger matters so much.
How is the 84-month window calculated?
From the dates the offenses were committed, not the dates of conviction. That distinction matters, because a case that took a long time to resolve can still fall inside or outside the window based on when the driving happened.
My license was suspended but I never got the notice — does that matter?
It can matter a great deal. A suspended-license aggravated DUI generally requires that you knew or should have known about the suspension, and defective or misdirected MVD notice is a genuine defense worth investigating — particularly if you’d moved and the notice went to an old address.
Is a DUI with my kid in the car really a felony?
Yes — a passenger under 15 makes it a class 6 felony under § 28-1383, even at a standard BAC and even with no prior record. It’s the trigger that most often surprises otherwise low-risk defendants.
Can an aggravated DUI be reduced to a misdemeanor?
Sometimes, and it’s often the primary goal. If the aggravating element can be defeated — bad notice on a suspension, unproven or mis-dated priors, a failure of proof on the passenger’s age — the case can fall back to a misdemeanor DUI, which changes the outcome dramatically.
Related guides
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Felony exposure justifies a serious conversation. Tell us what happened and we’ll connect you with an independent licensed Arizona attorney who handles felony DUI cases in Coconino County Superior Court.
Sources & Corrections
Primary sources checked for this page on July 31, 2026:
- A.R.S. § 28-1383 — Aggravated driving under the influence (felony triggers and classes)
- A.R.S. § 28-1381 — Driving under the influence (underlying offense)
- Arizona Judicial Branch — 2025 DUI Sentencing Chart (effective September 26, 2025)
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Not legal advice. The Flagstaff Legal Resource Center is an independent referral service operated by Wilder West Assets LLC — not a law firm. Felony sentencing depends on the offense class, prior record, and case-specific facts; the figures here are general and not a prediction. No attorney-client relationship is created by using this site. Verify any attorney’s credentials through the State Bar of Arizona.