Fourth DUI in Florida — Felony Prosecution

A fourth DUI in Florida is always a third-degree felony under Florida Statute § 316.193(2)(b)(3) — no time limit applies, no look-back window saves you, and permanent license revocation is mandatory. A fourth DUI carries up to 5 years in state prison, a $5,000 fine, permanent revocation of your driving privilege, and the real possibility of a habitual offender designation that can reach beyond the DUI sentence itself. If you are facing a fourth DUI charge, this is a felony prosecution and it requires a defense built for trial.

Legally reviewed by Tonmiel Rodriguez, Board Certified Criminal Trial Lawyer — last reviewed June 2026.

Is a Fourth DUI Always a Felony in Florida?

Yes. Under § 316.193(2)(b)(3), a fourth or subsequent DUI conviction is a third-degree felony regardless of when the prior convictions occurred. There is no 10-year window, no timing exception, and no misdemeanor pathway for a fourth offense. This is a permanent statutory rule — three prior DUI convictions on your record means the fourth arrest triggers felony prosecution every time, no matter how old the priors are. The only questions are whether the state can prove the current offense and whether the prior convictions are properly established and admissible.

Penalty	Fourth DUI (Always Felony)
Classification	Third-Degree Felony
Maximum Prison	5 years (Florida state prison)
Maximum Fine	$5,000
License Revocation	Permanent (mandatory)
Vehicle Impoundment	90 days (mandatory)
Ignition Interlock	Mandatory upon any reinstatement
Adjudication	Mandatory — cannot be withheld
Record Sealing	Not available

What Is the Permanent License Revocation for a Fourth DUI?

Under § 322.28(2)(a)(3), a fourth DUI conviction triggers a permanent license revocation — not a time-limited suspension or a 10-year revocation, but a lifetime bar from driving in Florida. Reinstatement after a permanent revocation requires a formal hardship reinstatement hearing with DHSMV, available only after a minimum of 5 years from the revocation date, and only if the applicant demonstrates no DUI-related violations during the revocation period, has completed all required DUI school and evaluation, and agrees to a lifetime ignition interlock requirement. This is not automatic — DHSMV has discretion to deny reinstatement even if all conditions are technically met. In practice, many fourth-DUI defendants never drive legally again.

What Is a Habitual Traffic Offender Designation and Does It Apply to Fourth DUI?

Under § 322.264, a person who accumulates three or more DUI convictions within a 5-year period qualifies as a Habitual Traffic Offender (HTO), triggering an additional 5-year license revocation separate from the DUI revocation — and separate from the felony DUI prosecution. An HTO designation can run consecutively to the DUI revocation, extending the total period without driving privilege significantly beyond the DUI revocation alone. If the state pursues HTO designation alongside the fourth DUI felony, the driving consequences compound in ways that require careful tracking and legal challenge at every stage.

Will I Go to Prison for a Fourth DUI in Florida?

A fourth DUI felony scores as a third-degree felony under the Florida Criminal Punishment Code. For many fourth-DUI defendants with prior felony DUI convictions, the CPC score will exceed 44 points — triggering mandatory prison scoring under the guidelines. Even where the score does not mandate prison, the combination of a felony charge, multiple prior DUI convictions, and the state attorney’s posture in the 10th Circuit makes a non-prison resolution require substantial litigation effort. This is not a case to resolve quickly with a plea. The question of prison vs. probation vs. an acquittal requires someone who has tried felony cases in front of Polk County juries.

How Do I Defend a Fourth DUI Felony in Florida?

The fourth DUI defense starts the same place every DUI defense starts: the stop. If the traffic stop was unlawful, the entire case can be suppressed. I file suppression motions when the facts support them, and in a case with 5 years of prison on the table, winning a suppression motion is the most important motion in criminal defense. Beyond the stop, every technical defense from prior DUI tiers applies: field sobriety test challenges, Intoxilyzer 8000 calibration and maintenance records, FDLE Form 16 inspection failures, observation period gaps, rising BAC, and partition ratio. I request all of it.

The prior convictions deserve particular scrutiny. Each prior DUI conviction used to elevate the charge to felony status must be properly established by the state. I examine each prior conviction for: Was the defendant represented by counsel? Was the plea knowing and voluntary? Were the Boykin advisements adequate? Was there an adequate factual basis? A single defective prior can alter the charge level and the entire sentencing exposure. In cases involving out-of-state priors, the analysis becomes more complex and the challenges more viable.

• Traffic stop suppression — unlawful stop eliminates all evidence
• Challenge to prior convictions used as predicates for felony elevation
• Out-of-state prior conviction analysis — admissibility and comparability
• Intoxilyzer 8000 — FDLE Form 16 inspection records, calibration failures
• Field sobriety test NHTSA protocol deviations
• Observation period — 20-minute continuous observation requirement
• Rising BAC, partition ratio, and mouth alcohol defenses
• Medical condition defenses affecting test performance
• CPC scoring analysis — challenging upward departure at sentencing
• HTO designation challenge — attacking the classification independently

How Is a Fourth DUI Different From a Third DUI in Florida?

A third DUI in Florida is a felony only when the third conviction falls within 10 years of a prior — outside that window, it is a misdemeanor and the 10-year revocation is not permanent. A fourth DUI eliminates all of those windows and exemptions: it is a third-degree felony regardless of timing. The revocation is permanent rather than capped at 10 years, and habitual offender designation becomes likely. The prosecution posture also changes — a fourth DUI in the 10th Circuit is handled by experienced prosecutors who have seen this pattern before, and the state attorney’s offer posture typically reflects that. The defense must be prepared to try the case.

How Does the State Prove a Fourth DUI in Florida?

Proving a fourth DUI requires the state to establish not only the current offense but also the three prior DUI convictions. Prior convictions are proven through certified copies of the final judgment from each prior court. The state must obtain official certified court records — not just computer printouts or DHSMV records — and introduce them at trial or attach them to a sentencing submission. Each prior conviction is a separate evidentiary showing. I request the state’s evidence of each prior conviction early and review every certified judgment for defects that could render the prior inadmissible or subject to collateral challenge.

Out-of-state prior convictions present additional complexity. Florida may use an out-of-state DUI conviction as a predicate for felony fourth-DUI status if the foreign offense is “substantially similar” to Florida’s DUI statute. The comparability analysis is a legal argument — not automatic — and when a prior comes from a state with a significantly different DUI standard, I challenge the comparability at the felony threshold stage.

Prison Scoresheet Analysis for a Fourth DUI Felony

Under the Florida Criminal Punishment Code, a fourth DUI felony is scored as a Level 3 offense under §§ 921.0022–921.0024. The primary offense score is 2.4 points. Prior DUI convictions score as prior record points at various levels depending on their classification. A person with three prior DUI convictions — at least one of which became a third-degree felony — will typically score sufficient prior record points to push the total CPC score above 44 points, which triggers a presumptive prison sentence under the guidelines.

Even where the CPC score does not mandate prison, a departure upward is well within a judge’s discretion for a fourth DUI based on the nature and pattern of the offenses. In the 10th Circuit, Polk County judges are familiar with the DUI recidivism pattern and do not regard a fourth conviction as a minor matter. The sentencing reality for a fourth DUI felony in Polk County is that prison is the likely outcome upon conviction, not the exceptional one. That is why the defense has to focus on preventing conviction rather than on managing the sentence.

What Is the Permanent Revocation Process After a Fourth DUI?

Permanent revocation under § 322.28(2)(a)(3) is imposed administratively by DHSMV upon receiving the certified court disposition of the fourth DUI conviction. There is no separate hearing for the imposition of permanent revocation — it is automatic upon conviction. After 5 years from the revocation date, the defendant may petition DHSMV for a hardship reinstatement hearing under § 322.271. At that hearing, the petitioner must demonstrate:

• Completion of all required DUI education and substance abuse evaluation/treatment
• No DUI-related violations, arrests, or convictions during the revocation period
• Current circumstances supporting fitness to drive
• A plan for compliance with ignition interlock requirements upon reinstatement

DHSMV has full discretion to deny restoration even when all conditions are technically met. The hearing officer evaluates the petitioner’s full record, current circumstances, and candor. A well-prepared, credible mitigation presentation — including letters of support, documentation of treatment completion, and a demonstrated commitment to sobriety — materially improves the likelihood of a favorable decision.

What Does Plea Negotiation Look Like in a Fourth DUI Felony Case?

Plea negotiation reality in fourth DUI felony cases in the 10th Judicial Circuit is stark. The state attorney’s office typically does not offer charge reductions to misdemeanor DUI on a fourth offense — the statutory bar against time-window exceptions means the felony charge is fixed. What negotiations tend to address are: the specific prison term versus a probationary sentence, the conditions of probation, and whether a prison sentence is concurrent or consecutive to any other open case. For defendants with CPC scores pushing mandatory prison, the only negotiating leverage is the strength of the defense. If the stop is suppressible, the state needs to evaluate dismissal. If the prior convictions are vulnerable, the charge level changes. Leverage in a fourth DUI comes from the quality of the defense work, not from the calendar or the defendant’s personal circumstances.

What Happens in Court — Fourth DUI Felony Process in the 10th Circuit

A fourth DUI felony in Polk, Highlands, or Hardee County proceeds through the circuit court (not county court — felonies are circuit-level). The typical case timeline:

• First appearance: Within 24 hours of arrest — bond is set or denied by a circuit judge. For a fourth DUI with prior felony convictions, bond is frequently set at $10,000–$25,000 or higher, and a no-alcohol condition is common.
• Arraignment: Defendant enters a plea of not guilty — always not guilty at arraignment, regardless of the ultimate strategy. I waive arraignment in writing for clients in most cases to avoid the additional hearing.
• Discovery period: I file demands for all discovery including dash cam and body cam video, the officer’s training records, the Intoxilyzer 8000 maintenance records, the certified copies of prior convictions the state intends to use, and any witness statements.
• Pretrial motions: Suppression motions, challenges to prior convictions, in limine motions to limit the state’s evidence at trial.
• Docket calls and pretrial conferences: Scheduled hearings to track the case toward disposition — trial or plea.
• Trial or plea: If no favorable resolution is reached through motions, the case proceeds to jury trial in circuit court. Felony DUI juries consist of 6 jurors in Florida.
• Sentencing: If convicted at trial or by plea, sentencing occurs after a CPC scoresheet is prepared. The defense submits sentencing memoranda and mitigation evidence before the hearing.

Related DUI Defense Pages

• DUI Defense in Florida — Complete Overview
• Second DUI in Florida — Enhanced Penalties
• Third DUI in Florida — Felony Charges
• DUI Refusal — Refusing the Breath Test (Trenton’s Law)
• DUI Breath Test — Intoxilyzer 8000 Defense
• DUI Blood Test Defense — Florida
• Criminal Defense — Polk County

Frequently Asked Questions — Fourth DUI in Florida

Is a fourth DUI always a felony in Florida, even if the prior convictions are old?

Yes. Under § 316.193(2)(b)(3), a fourth DUI is a third-degree felony regardless of the age of the prior convictions — no 10-year window applies. A prior DUI from 1995 counts the same as one from last year. The only way to avoid felony classification is to successfully challenge the admissibility of one or more prior convictions.

What happens to my driver’s license after a fourth DUI conviction?

Under § 322.28(2)(a)(3), a fourth DUI conviction triggers permanent license revocation in Florida. Reinstatement requires a DHSMV hardship hearing after a minimum of 5 years, proof of no DUI-related violations during the revocation, completion of DUI school and evaluation, and agreement to a lifetime ignition interlock requirement. DHSMV retains discretion to deny reinstatement even when all conditions are met.

Can a fourth DUI felony conviction be sealed or expunged in Florida?

No. Under §§ 943.0585 and 316.656, DUI convictions are specifically excluded from sealing and expungement, and adjudication is mandatory on a fourth offense. The conviction is permanent on the criminal record. There is no post-conviction relief available that removes a DUI from the Florida criminal history record.

What is the Habitual Traffic Offender designation in Florida?

Under § 322.264, accumulating three or more DUI convictions within 5 years triggers a Habitual Traffic Offender (HTO) designation and an additional 5-year DHSMV license revocation, separate from and potentially running consecutively to the DUI revocation. An HTO designation is a DHSMV administrative action — it exists independent of the criminal DUI case — and must be challenged at the DHSMV hearing level if it is improper.

Can prior DUI convictions be challenged in a fourth DUI case?

Yes. Each prior DUI conviction used to establish the fourth-offense felony must be properly proven by the state. If any prior conviction was obtained without adequate counsel, without a knowing and voluntary plea, or without proper Boykin advisements, it may be excludable. This is a constitutional challenge available at the felony DUI level and worth pursuing — knocking out one prior conviction changes the offense level and the sentencing exposure significantly.