A second offense DUI lawyer in Arizona defends clients facing dramatically escalated penalties under the state’s 84-month lookback period. Arizona treats a second DUI conviction within 7 years as a prior-enhanced Class 1 misdemeanor, with mandatory minimums that include 90 days jail and a 1-year license revocation. Oliverson Law PLLC draws on former prosecutor and judicial experience to challenge enhanced charges. Call (480) 582-3637 for immediate help.
Arizona uses an 84-month (7-year) lookback period to determine whether a DUI is treated as a second offense. The clock starts from the date the prior offense was committed, not the date of conviction. If your prior DUI arrest occurred within 84 months of the current arrest — even if the first case took years to resolve — the current charge carries enhanced mandatory penalties under ARS 28-1381(K).
The penalty escalation between a first and second offense DUI in Arizona is severe. Where a first offense carries 10 days jail with 9 suspendable, a second offense requires 90 days minimum jail with only 60 days suspendable. The court cannot go below 30 days of actual incarceration for a second offense standard DUI.
| Penalty | 1st Offense DUI | 2nd Offense DUI |
|---|---|---|
| Jail Time | 10 days (9 suspendable) | 90 days (60 suspendable) — minimum 30 days served |
| Fines & Fees | $1,250+ | $3,000+ with surcharges |
| License Action | 90-day suspension | 1-year revocation |
| Ignition Interlock | 6-12 months | 12 months minimum |
| Community Service | Court discretion | 30+ hours mandatory |
| Alcohol Treatment | Screening + education | Mandatory treatment program |
| Probation | Up to 5 years | Up to 5 years with stricter terms |
The license consequence jumps from a 90-day administrative suspension to a full 1-year revocation. Unlike a suspension, a revocation requires you to reapply for a new license after the revocation period ends, including retaking the written and driving tests. During the revocation year, no restricted permit is available for the first 45 days, and interlock-restricted driving requires completing additional requirements.
A critical risk with a second offense: if you receive a third DUI within 84 months, the charge automatically escalates to aggravated DUI — a Class 4 felony carrying a minimum 4 months in the Arizona Department of Corrections. This makes the defense of a second offense case not just about the current penalties, but about preventing the cascade to felony exposure on any future charge.
In Arizona second offense DUI cases, the prior conviction does not simply increase the mandatory minimums — it fundamentally changes how prosecutors and judges approach your case. Prosecutors in Maricopa County and Mohave County have less discretion to offer favorable plea agreements when a defendant has a prior DUI on record. Judges who might consider lenient sentencing for a first-timer often take a harder line on repeat offenders.
The prosecution must prove the prior DUI conviction qualifies under the 84-month lookback. This requires documentation of the prior offense date, court records, and sometimes the specific disposition. Defense challenges to the prior can include verifying that the lookback period calculation is accurate, confirming that the prior conviction was constitutionally valid (for example, that you had counsel or properly waived counsel), and ensuring the prior offense meets Arizona’s definition of a “DUI” if it occurred in another state.
A second offense DUI combined with an elevated BAC creates compounding penalties. A second offense extreme DUI (BAC 0.15-0.199%) carries 120 days minimum jail with only 60 suspendable, meaning 60 days of actual incarceration. A second offense super extreme DUI (BAC 0.20%+) carries 180 days minimum with 90 suspendable — 90 days of mandatory jail time. These numbers make aggressive defense work on a second offense case essential to your freedom.
Enhanced penalties mean more jail time, higher fines, and a full year without your license. Derek Oliverson — former judge, former prosecutor, former police officer — knows exactly how to challenge second offense cases.
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Second offense DUI cases require a layered defense strategy that addresses both the current charge and the prior conviction used to enhance penalties. Derek Oliverson’s background as a police officer, prosecutor, and judge provides unique insight into where second offense cases are most vulnerable to defense challenges.
Derek Oliverson founded Oliverson Law PLLC after serving as a Henderson, Nevada police officer, Mohave County criminal prosecutor, and judge at Page Magistrate Court and Glendale City Court. He has handled over 5,000 criminal cases. Attorney David Tangren, a former Pima County prosecutor, provides additional prosecution-side insight to the defense team.
We pull complete records on your prior DUI conviction to verify the date falls within the 84-month window, confirm the conviction was constitutionally valid, and determine if out-of-state priors properly qualify under Arizona law. Defects in the prior can eliminate the enhanced penalties entirely.
We file the MVD hearing request within the 15-day window and aggressively challenge the administrative license revocation. For second offenders, losing driving privileges for a full year creates enormous practical hardship — we fight the administrative action with the same intensity as the criminal case.
We request independent blood sample analysis, subpoena Intoxilyzer 8000 maintenance records, obtain all body camera and dashcam footage, and review the officer’s DUI certification history. Second offense cases justify more intensive investigation because the penalty exposure is dramatically higher.
Whether through motion practice that leads to dismissal, negotiation that reduces the charge to first-offense-level penalties or a non-DUI offense, or trial when the evidence supports acquittal, we pursue the outcome that best protects your freedom and your ability to drive.
Oliverson Law PLLC defends second offense DUI cases across Arizona from offices in Tempe, Phoenix, Gilbert, and Kingman. We appear in municipal courts, justice courts, and superior courts statewide.
First Offense DUISuper Extreme DUIUnderage DUIExtreme DUIAggravated DUI
A second offense standard DUI within 84 months carries a mandatory minimum of 90 days in jail, with 60 days suspendable upon completion of required programs. This means you must serve at least 30 days of actual jail time. A second offense extreme DUI (BAC 0.15%+) requires 120 days with 60 suspendable, meaning 60 days served. A second offense super extreme DUI (BAC 0.20%+) requires 180 days with 90 suspendable, meaning 90 days served. Work release or home detention may be available for portions of the sentence depending on the court.
Arizona’s 84-month (7-year) lookback period determines whether a current DUI is treated as a second or subsequent offense. The 84 months are counted from the date the prior offense was committed, not the conviction date. If your prior DUI arrest occurred more than 84 months before the current arrest, the current charge is treated as a first offense for sentencing purposes. This calculation can be challenged if the prosecution uses an incorrect date for the prior offense.
A second DUI can effectively be reduced to first-offense-level penalties in Arizona through several defense strategies. If the prior conviction is found to be constitutionally defective — for example, obtained without counsel or a valid waiver — it cannot be used for enhancement. If the lookback period calculation shows the prior falls outside the 84-month window, current penalties default to first-offense levels. Additionally, strong defense work that weakens the prosecution’s case can create negotiating leverage for a plea agreement at reduced penalty levels.
A second DUI within 84 months triggers a 1-year license revocation — a more severe consequence than the 90-day suspension for a first offense. Unlike a suspension, revocation means your license is canceled entirely and you must reapply after the revocation period, including retaking written and driving tests. An ignition interlock device is required for at least 12 months. Requesting an MVD hearing within 15 days of arrest is critical to contest the revocation and potentially maintain restricted driving privileges during your case.
A third DUI within 84 months automatically becomes an aggravated DUI under ARS 28-1383 — a Class 4 felony. This carries a presumptive sentence of 2.5 years in the Arizona Department of Corrections, a minimum of 4 months in prison, a 3-year license revocation, and a permanent felony record. This is why aggressive defense of a second offense DUI is critical: avoiding a conviction now eliminates the risk of felony exposure on any future charge within the lookback window.
Derek Oliverson has presided over thousands of cases from the bench, prosecuted DUI cases, and patrolled streets as a police officer. He uses 17+ years of experience from every side of the justice system to fight your second offense charges.
