A fourth Minnesota DWI within 10 years is ordinarily first-degree DWI, a felony punishable by up to seven years in prison and a $14,000 fine. The familiar phrase “fourth DWI” is only shorthand. The state must prove a present violation of Minnesota’s DWI statute and three legally distinct, qualified prior impaired-driving incidents inside the exact statutory period.

That proof can be more complicated than a driving-record printout suggests. A conviction and license revocation from one arrest generally count once, not twice. An out-of-state entry must conform to Minnesota law. An old criminal-vehicular conviction must fit the legislature’s detailed list. A rescinded revocation may not qualify. Even one day can determine whether the earliest incident is inside the 10-year period.

The sentence also requires careful explanation. Minnesota law requires the court to pronounce at least a three-year sentence, but the court may stay execution when legally permitted. A stayed sentence is not a dismissal and is not consequence-free: the fourth-offense statute generally requires 180 days under one of its authorized local-custody or supervision structures. An executed prison sentence carries five years of conditional release afterward.

This guide focuses on the fourth-incident form of first-degree DWI: the three-prior enhancement, present-offense defenses, felony sentencing, driver’s-license cancellation and ignition interlock, plate impoundment, forfeiture, and practical defense work. It uses Minnesota law effective in 2026; the law in effect on the offense date generally controls. It is general information, not advice for a particular file.

Immediate steps after a fourth DWI arrest

Preserve every notice and envelope. The criminal case, license revocation, plate order, and forfeiture matter use different procedures. A deadline in one file is not suspended while another is pending.
Comply exactly with release conditions. Abstinence, remote alcohol monitoring, testing, no-driving restrictions, geographic limits, and court dates may be enforced immediately. Device trouble should be reported through counsel or the supervising agency before it becomes an alleged violation.
Obtain source records for all three priors. Counsel needs complaints, judgments, revocation orders, rescission orders, historical statutes, foreign dispositions, and documents showing which entries arose from the same conduct.
Preserve current-incident evidence. Identify squad and body-camera video, dispatch audio, third-party surveillance, witnesses, receipts, phone or vehicle data, test records, warrant materials, medical evidence, and laboratory files.
Protect property interests. If a vehicle was seized or restrained, keep the forfeiture notice, title, loan or lease documents, insurance, registration, payment records, and information about every owner or lienholder.

A petition challenging the driver’s-license revocation ordinarily must be filed within 60 days after receipt of the notice. Plate review also ordinarily has a 60-day petition period. Vehicle forfeiture uses separate statutory notice and judicial-review procedures. Waiting for the first felony hearing can be too late.

Do not post an explanation online or discuss the facts in a recorded jail call. A felony DWI investigation may involve several agencies and several proceedings. What sounds like a harmless account can become an admission, conflict with video, or affect another owner’s property claim.

What makes a fourth DWI within 10 years a felony?

Minn. Stat. § 169A.24, subdivision 1(1) (2026), makes a present DWI first degree when it occurs within 10 years of the first of three or more qualified prior impaired-driving incidents. The prosecution therefore must prove:

a present violation of Minn. Stat. § 169A.20 (2026);
three qualified prior impaired-driving incidents;
that those priors arose from three separate courses of conduct;
that the present violation falls within 10 years of the first of them; and
that the records concern the accused person.

First degree can also rest on a prior felony DWI or one of the substance-related criminal-vehicular felonies listed in section 169A.24. Those alternative provisions matter if the complaint pleads them, but a charge described as a “fourth DWI within 10 years” ordinarily relies on the three-prior clause. The complaint and probable-cause statement should identify the actual theory instead of leaving the enhancement ambiguous.

The present alcohol concentration does not create first-degree status. A 0.16 or higher result and a child passenger are aggravating factors for lower DWI degrees, but the fourth-incident felony in this guide turns on three qualifying priors. Conversely, a low or borderline test does not reduce the charge if the state proves an alternative current violation and the enhancement.

The defense should audit all three alleged prior incidents

A qualified prior impaired-driving incident is defined through Minn. Stat. § 169A.03, subdivisions 20–22 (2026). It can be a qualifying impaired-driving conviction or a qualifying impaired-driving-related loss of license. That means a civil implied-consent revocation can sometimes count even when the companion criminal charge was dismissed.

Every alleged predicate should have its own record sheet:

date and jurisdiction of the conduct;
criminal and administrative file numbers;
charged statute, conviction statute, and subdivision;
judgment, sentencing, and final-disposition dates;
revocation service date, effective date, and review result;
rescission, appeal, vacation, amendment, or later correction;
whether another entry came from the same arrest; and
identity evidence connecting the record to the accused.

A conviction and revocation from one event count once

Minn. Stat. § 169A.09 (2026) requires prior incidents used together to arise from separate courses of conduct. A DWI conviction and administrative revocation from the same arrest ordinarily count as one incident. Four database entries can therefore represent only two or three legal incidents.

The dates displayed in a driving record can make one event look like several. The revocation may begin immediately, the criminal conviction may be entered months later, and reinstatement may occur years later. Incident reports, court files, revocation notices, and matching agency numbers are used to determine which entries share a factual origin.

The legislature’s list controls

An old record does not qualify merely because it sounds alcohol-related. In State v. Smith, 899 N.W.2d 120, 122–26 (Minn. 2017), the Supreme Court rejected a predicate that was not included in the detailed statutory list. The court explained that “if a crime is not listed,” it is not a qualifying prior conviction. The exact historical statute, subdivision, clause, and disposition matter.

That principle is especially important for criminal-vehicular offenses because the legislature has repeatedly amended and renumbered them. It also matters for juvenile adjudications, older refusal provisions, municipal ordinances, commercial-driver actions, and offenses from other states. A modern database description may not accurately state the statute that produced the judgment.

Out-of-state DUI and license actions require conformity

Minnesota does not automatically count every foreign offense labeled DUI, OWI, OUI, or refusal. The foreign statute or ordinance must conform to one of the Minnesota provisions incorporated into the definition. Counsel should obtain the historical foreign statute and a certified record that identifies the actual offense of conviction or administrative action.

The comparison asks what the foreign law required at the time. A broader law may cover conduct Minnesota did not list. A diversion or deferred disposition may not be the same as a conviction. An administrative suspension may be based on a rule different from Minnesota’s test-failure or refusal provisions. The legal label alone does not answer the question.

The 10-year period must be calculated day by day

The enhancement requires the current violation to occur within 10 years of the first of the three priors. In State v. Wertheimer, 781 N.W.2d 158, 162–63 (Minn. 2010), the Supreme Court held that the relevant dates “must be in the same ten-year period.” On the facts before it, the same calendar date exactly 10 years later was outside the window.

This is not a year-only calculation. Arrest date, offense date, revocation date, conviction date, and sentencing date are not interchangeable. Counsel should identify the operative date for each type of alleged predicate under the controlling statutory version and calculate from certified records. If the earliest incident fails, the case may drop from felony first-degree to a lower degree unless another first-degree theory applies.

The criminal window should not be confused with current licensing law. Minn. Stat. § 171.178 (2026) commonly uses a 20-year lookback for revocation, cancellation, and ignition-interlock consequences. An incident excluded from the 10-year felony calculation may still increase the administrative penalty. Separate criminal and licensing worksheets prevent that distinction from being lost.

How the state proves prior incidents at trial

The three priors are part of the felony allegation, not merely sentencing background. The state may use certified judgments, revocation records, driving records, fingerprints, photographs, identifying information, and testimony. The defense can challenge identity, foundation, completeness, final disposition, timing, same-conduct duplication, foreign conformity, and statutory qualification.

There is an obvious prejudice problem: a jury deciding the present DWI should not hear unnecessary details about three old incidents. A properly framed stipulation may reduce that prejudice while preserving a legal challenge to whether a record qualifies. But counsel cannot silently surrender the accused person’s jury-trial right on an element. In State v. Kuhlmann, 806 N.W.2d 844, 848–50 (Minn. 2011), accepting counsel’s stipulation to prior-conviction elements without the defendant’s personal waiver was error.

The stipulation’s wording matters. It can acknowledge an historical fact without conceding a disputed legal conclusion or an uncharged alternative enhancement. Jury instructions should identify what remains for the state to prove. Motions in limine should address the records, permitted references, redactions, and what happens if the prosecutor believes the defense has opened the door to additional detail.

The current DWI still must be proved beyond a reasonable doubt

Three prior incidents do not prove what happened this time. Section 169A.20 contains several distinct theories: driving, operating, or physical control while under the influence; an alcohol concentration of 0.08 or more at the time or within two hours; substance- or cannabis-related provisions; commercial-vehicle rules; presence-based drug provisions; and criminal test refusal. The complaint’s precise clauses determine the elements.

The stop, seizure, and expansion

An officer must have a lawful basis for the seizure. A traffic violation, sufficiently reliable report, or particularized facts suggesting criminal activity may support a stop; a hunch does not. In State v. Diede, 795 N.W.2d 836, 843 (Minn. 2011), the Supreme Court required a “particularized and objective basis” for reasonable suspicion.

Video and dispatch audio should be compared with the report. Lane position, signaling, speed, road design, weather, observation time, the officer’s vantage point, caller reliability, and corroboration can matter. A valid traffic stop may still be unlawfully prolonged or expanded if the officer lacked a lawful basis to investigate impairment when the encounter changed direction.

Driving and physical control

Identity can be disputed after a crash, a vehicle switch, delayed police arrival, or conflicting witness accounts. Statements, injuries, seat position, keys, phone data, vehicle data, surveillance, and witness credibility may determine who drove and when. A person’s ownership of the vehicle is evidence, not conclusive proof of operation.

Physical control uses the total circumstances. In State v. Fleck, 777 N.W.2d 233, 236–37 (Minn. 2010), the Supreme Court considered the person’s position, keys, vehicle operability, ownership, location, and practical ability to put the vehicle in motion. The analysis is fact-specific; proximity to a vehicle is not itself the element.

Field sobriety and observational evidence

Reports often reduce an encounter to odor, red eyes, slurred speech, balance, admissions, and selected field-test clues. The original recording may confirm those observations, contradict them, or supply important context. Surface, slope, snow, wind, lighting, footwear, injury, disability, age, fatigue, anxiety, and language can affect performance.

The defense should not argue that every observation is meaningless. It should determine what the officer actually observed, whether the video supports the description, what alternative explanations are documented, and whether the total evidence establishes the charged theory beyond a reasonable doubt.

Breath, blood, urine, and toxicology

An evidentiary breath result should be reviewed from observation period through final record. Relevant materials can include the complete test sequence, subject samples, controls, diagnostics, instrument messages, maintenance and repair history, operator certification, and video. Mouth alcohol, regurgitation, medical conditions, an interfering substance, unexplained sequence interruption, sample agreement, and timing deserve case-specific review.

A blood or urine case begins with legal collection authority and continues through the analytical method. Obtain the warrant application and return, collection records, kit information, seals, preservatives, labeling, storage, transport, accession, chain of custody, calibration, controls, uncertainty, and laboratory notes. For drugs or cannabis, distinguish screening from confirmation, a parent compound from a metabolite, presence from impairment, and a prescription from a legal defense to the charged clause.

Test refusal

A refusal charge requires more than the absence of a number. The state must establish the prerequisites for the evidentiary-test request and prove a legally sufficient refusal. Counsel should review the officer’s exact request, the accused person’s words and conduct, attorney consultation, test type, warrant if applicable, medical or physical limitations, instrument messages, attempts to comply, and the point at which the officer ended the process.

Silence, confusion, conditional language, delay, inability to provide a sample, and an express refusal are not identical. The recording—not a summary label—usually provides the best evidence of the exchange.

The felony sentence: three-year minimum duration and seven-year maximum

First-degree DWI is punishable by up to seven years’ imprisonment, a fine of up to $14,000, or both. Under Minn. Stat. § 169A.276 (2026), the court must sentence a person convicted of first-degree DWI to imprisonment for at least three years. The court may stay execution when authorized, but it may not stay imposition, stay adjudication, or pronounce less than three years.

The distinction between duration and disposition is essential:

Executed sentence: the person is committed to the commissioner of corrections to serve the prison term, subject to Minnesota’s release laws.
Stayed execution: the court pronounces the felony prison term but places the person on probation rather than immediately executing it. Local custody and intensive conditions still apply.

An executed sentence under section 169A.276 includes five years of conditional release after release from prison. The commissioner may impose conditions, and a violation can return the person to custody for all or part of the remaining conditional-release period. Conditional release is a significant addition to the prison term, not ordinary probation shorthand.

Whether the presumptive disposition is prison or a stay depends on the applicable Sentencing Guidelines, criminal-history score, any prior felony-DWI or qualifying criminal-vehicular predicate, and departure law. “Mandatory three years” should not be translated automatically into either “three years in prison” or “probation.” The judgment must impose the term; the sentencing analysis determines whether execution is stayed.

If execution is stayed, the fourth-offense custody statute applies

Minn. Stat. § 169A.275, subdivision 3 (2026), governs a conviction within 10 years of the first of three qualified priors when the court does not commit the person to state prison. It generally requires one of three structures:

a minimum of 180 days of incarceration, including at least 30 consecutive days in a local correctional facility;
an authorized intensive-supervision program requiring at least six consecutive local-custody days; or
staggered sentencing involving at least 180 days, including at least 30 consecutive local-custody days.

Under the first alternative, the court may place up to 150 days of the minimum penalty on home detention or in the specified intensive-probation program. The sentence should state exactly what is executed, where it will be served, whether work release or home detention is authorized, how custody credit applies, and which supervision program will administer the remaining requirements.

Staggered sentencing divides local incarceration into equal segments over three or more consecutive years. Before a later segment, the offender must participate in a structured sobriety group and may move to stay that segment after the monitoring required by the statute. The sentencing judge retains discretion. It is a structured accountability mechanism, not an automatic cancellation of future custody.

Treatment consistent with a substance-use assessment, abstinence, testing, remote electronic alcohol monitoring, restitution, ignition interlock, and reporting can be probation conditions. Minn. Stat. § 169A.277 (2026) may require at least 30 consecutive days of electronic alcohol monitoring during each year of probation when execution is stayed and equipment is available.

A stay exposes the person to probation revocation. If the court finds a violation and the legal standards for revocation are met, it may execute the pronounced prison sentence. That risk is why the defense should investigate whether proposed conditions are lawful, clear, technically feasible, affordable, and compatible with work, housing, medical care, and treatment before sentencing.

The 2026 Minnesota Sentencing Guidelines and criminal-history score

First-degree DWI is ranked at Severity Level 7 on the Standard Grid in the 2026 Minnesota Sentencing Guidelines and Commentary. The fixed duration begins at 36 months with a criminal-history score of zero and increases as the score increases, subject to the statutory maximum. The grid also identifies the presumptive disposition.

The three nonfelony incidents used to create the felony are not automatically reused as criminal-history points. In State v. Zeimet, 696 N.W.2d 791, 796–98 (Minn. 2005), the Supreme Court explained that predicate convictions “cannot be used a second time” in the criminal-history score. Additional qualifying convictions not needed for the enhancement may still be scored under the Guidelines.

The worksheet should be audited for felony points, custody status, misdemeanor and gross-misdemeanor units, decay, multiple sentences from one behavioral incident, foreign equivalency, and which convictions were allocated to enhancement. A one-point change can alter duration and sometimes disposition. The applicable Guidelines edition usually depends on the offense date, so an older case should not be sentenced mechanically from the current grid.

License cancellation and ignition interlock use a 20-year record

The felony case does not pause the civil license action. Current section 171.178 can cancel driving privileges as inimical to public safety and require treatment or rehabilitation plus an extended period of compliant ignition-interlock participation. With three or more qualified incidents in the 20-year licensing period, current law can require at least 10 years of interlock before unrestricted privileges return.

The exact result depends on the present test, refusal, conviction, number and timing of priors, driving class, and prior interlock history. Commercial driving privileges have separate rules. Another state may take its own action against an out-of-state license.

Interlock time is measured by compliant participation, not merely the passage of calendar years. Positive readings, unauthorized driving, missed service, tampering, new revocation, or program termination can delay completion or eliminate credit. Treatment proof, reinstatement fees, insurance, testing, and commissioner requirements should be built into any long-term plan.

A judicial-review petition ordinarily must be filed within 60 days after receipt of the notice. Administrative review and interlock enrollment do not extend that deadline. See the firm’s Minnesota DWI license revocation and implied-consent guide for the civil procedure.

Plate impoundment and vehicle forfeiture

A fourth incident ordinarily triggers plate impoundment under Minn. Stat. § 169A.60 (2026). The order may affect the involved vehicle and other vehicles registered, jointly registered, or leased in the violator’s name, subject to statutory owner protections. Special registration plates can permit lawful use under specified conditions. Judicial review ordinarily requires a petition within 60 days after receipt.

The involved vehicle may also be subject to forfeiture under Minn. Stat. § 169A.63 (2026). The civil forfeiture file raises issues different from the criminal charge: whether the present event is a designated offense, whether the vehicle was used, lawful ownership, joint ownership, perfected security interests, innocent-owner proof, interlock return provisions, and the effect of dismissal, acquittal, or rescission.

A spouse, parent, business, lessor, or lender may have an interest separate from the driver’s. Each claimant should know who counsel represents. Title, purchase records, loan documents, payment history, possession, insurance, keys, use, and owner knowledge can matter. The criminal defense, license petition, plate petition, and property claim should be coordinated without assuming that one filing protects them all.

Negotiation, trial, and sentencing strategy

A fourth-incident felony DWI has two principal liability fronts: the current offense and the three-prior enhancement. A strong motion on the stop or test can defeat the present charge. A successful challenge to one prior can reduce the ordinary enhancement below first degree. The license and property files add separate deadlines and remedies.

Negotiation should follow the evidence audit. Potential subjects include dismissal of an unsupported predicate, reduction in degree, alternative counts, the Guidelines score and disposition, departure issues, local-custody structure, treatment, monitoring credit, forfeiture, companion charges, and restitution. The prosecutor cannot promise away the commissioner’s independent licensing authority.

Trial planning should decide how the priors will be proved, whether and how to stipulate, which legal challenges must be preserved, what experts are genuinely useful, and how to keep the jury focused on the present evidence. A felony label cannot substitute for proof.

Sentencing preparation should begin before a plea. Useful evidence may include a properly selected assessment, verified treatment and sobriety, monitoring compliance, stable housing, employment and caregiving, medical and mental-health information, restitution, transportation, interlock arrangements, community support, and a workable supervision proposal. The presentation should address accountability and public safety with reliable facts, not slogans.

Frequently asked questions about a fourth Minnesota DWI

1. Is a fourth DWI within 10 years always a felony?

It is ordinarily first-degree felony DWI if the state proves a present violation and three qualified prior incidents inside the exact period. If a prior fails, another felony predicate may still matter, but the ordinary three-prior theory may fall.

2. What is the maximum penalty?

First-degree DWI carries up to seven years in prison and a $14,000 fine. The likely sentence requires a separate Guidelines, criminal-history, mandatory-sentence, and departure analysis.

3. Does the three-year mandatory sentence always mean prison?

No. The court must pronounce at least a three-year sentence, but section 169A.276 permits a stay of execution when authorized. The court cannot stay imposition or adjudication or pronounce a shorter term.

4. What custody applies if execution is stayed?

The fourth-offense statute generally requires a 180-day structure with at least 30 consecutive local days, an authorized intensive-supervision alternative with at least six consecutive local days, or staggered sentencing.

5. Can license revocations count as priors?

Yes, when they satisfy the statutory definition. A conviction and revocation from the same conduct ordinarily count together as one incident, not two.

6. Can an out-of-state DUI count?

It can if the foreign law and disposition conform to a Minnesota provision listed in the definition. The historical statute and certified record should be reviewed rather than relying on the label.

7. What if the earliest incident was exactly 10 years earlier?

State v. Wertheimer held on its facts that the same calendar date exactly 10 years later was outside the period. The operative date for each alleged predicate must be verified.

8. Can the prior incidents be challenged?

Yes. Identity, dates, rescission, same-conduct duplication, statutory qualification, foreign conformity, final disposition, and admissible proof may all be disputed.

9. Can the current stop or chemical test still be challenged?

Yes. The felony enhancement does not excuse an unlawful seizure or unreliable evidence. The defense should investigate the stop, expansion, arrest, warrant or advisory, collection, testing, and chain of custody.

10. How long is ignition interlock?

Under current law, three or more qualified incidents in the 20-year licensing period can require at least 10 years of compliant interlock participation plus treatment or rehabilitation and other reinstatement requirements.

11. Will the license be canceled as inimical to public safety?

Current law generally requires cancellation in the multiple-prior scenario. The commissioner’s record and the requirements for lawful limited driving and eventual reinstatement should be reviewed promptly.

12. Will the plates be impounded?

Ordinarily yes. The plate order, vehicles affected, owner rights, special-registration rules, and 60-day judicial-review deadline should be addressed separately from the criminal case.

13. Can the state forfeit the vehicle?

Yes. A fourth incident within 10 years ordinarily meets the repeat-offense definition used in the forfeiture statute, subject to proof, procedure, owner defenses, liens, and statutory return provisions.

14. How long can probation last?

A felony stay is governed by Minnesota’s probation-duration law and the sentence imposed. The court can order intensive conditions, and a proven violation can expose the person to execution of the pronounced prison term.

15. Can a fourth DWI be reduced or dismissed?

Yes when the law or evidence supports that result. An invalid prior, unlawful stop, failure to prove driving or physical control, unreliable test, unsupported refusal, or another evidentiary defect can change the outcome.

A fourth DWI case must be defended as both a new prosecution and a record case

The defense should test the present allegation, reconstruct three prior incidents from source records, calculate the exact 10-year window, protect civil deadlines, and prepare sentencing before any plea. A database summary is not enough for a felony decision.

If you are charged with a fourth DWI within 10 years in Minnesota, bring the new notices, release order, every available prior-case record, vehicle title and financing documents, and all test or warrant paperwork to counsel promptly.