5th, 6th, 7th, 8th, 9th, and 10th+ Offense OWI in Wisconsin: Class G, F, and E Felony Penalties

Wisconsin's three highest OWI penalty tiers

Wisconsin Statute § 346.65(2)(am) sets the felony OWI penalty structure for offenses 5 and above. There are three sub-tiers:

• § 346.65(2)(am)5 covers the 5th and 6th offenses as a Class G felony.
• § 346.65(2)(am)6 groups the 7th, 8th, and 9th offenses into a single Class F felony tier.
• § 346.65(2)(am)7 covers the 10th and every subsequent offense as a Class E felony.

The prior-offense count includes all qualifying Wisconsin OWI convictions (including civil-forfeiture 1st offenses), refusal revocations, and qualifying out-of-state convictions counted under § 343.307(1). That subsection imposes no time limit and names no cutoff date. The 10-year window appears only in § 346.65(2)(am)2, which governs the 2nd-offense tier, so at every tier above the 2nd offense the age of a qualifying prior is irrelevant.

Penalties by tier

Why the prior-offense audit is the case at this level

At the 5th, 7th, or 10th offense, the felony class is determined by the count of prior convictions, and the State has to prove each one. Most of the productive work is proof work rather than constitutional attack:

• Identity mismatch: paper-only records from the 1990s sometimes carry typos, wrong DOB, or inconsistent name spellings that raise reasonable doubt the conviction belongs to the current defendant.
• The disposition actually entered: the record has to show a conviction, revocation, or suspension of a kind that § 343.307(1) counts, not merely a charge or a dismissed count.
• Out-of-state disposition with no alcohol or drug element: a reduction that removes the impairment element entirely does not count. State v. Jackson, 2014 WI App 50. Be realistic about the rest: State v. Puchacz, 2010 WI App 30, reads “substantially similar” broadly, and State v. List, 2004 WI App 230, counts Illinois court supervision as a conviction under §343.307(1)(d).

Attacking the constitutional validity of the prior conviction itself is a narrower path than it is often described to be. State v. Hahn, 2000 WI 118, holds that a circuit court “may not determine the validity of a prior conviction during an enhanced sentence proceeding predicated on the prior conviction unless the offender alleges that a violation of the constitutional right to a lawyer occurred in the prior conviction.” Grounds other than the right to counsel, including a defective plea colloquy, must be raised through whatever separate means state law provides, and a successful challenge there can then be used to reopen the enhanced sentence.

Striking even one prior changes the tier. A successful challenge that drops a charged 5th to a 4th cuts the prison ceiling from 10 years (Class G) to 6 years (Class H). A challenge that drops a 7th to a 6th cuts the mandatory minimum confinement from 3 years to 18 months. A challenge that drops a 10th to a 9th cuts the prison ceiling from 15 years (Class E) to 12 years 6 months (Class F). At every tier above the 4th offense, the audit is the highest-leverage defense available.

How common is a 5th, 7th, or 10th OWI in Wisconsin?

Two official sources count this, and they do not agree, which is worth understanding before quoting either. WisDOT's Traffic Convictions Entered on Driver Record File counts convictions by code as they are entered on driver records: 22,917 OWI convictions in 2022, 25,473 in 2023 and 25,066 in 2024, plus a separately coded 3,943 Prohibited Alcohol Concentration convictions in 2024. The Legislative Fiscal Bureau's Informational Paper #62, Intoxicated Driver Laws (January 2025), Table 6 counts "OWI and related convictions" on a different basis and reports lower totals: 18,999 in 2021, 17,368 in 2022 and 18,645 in 2023, with 2023 running 22.4% below 2014's 24,012. The gap is a difference in method, not an error in either. Neither series is a count of people, because one prosecution can produce more than one counted conviction.

Wisconsin does not publicly publish OWI conviction counts broken out by offense number (5th, 6th, 7th, 8th, 9th, 10th+). The underlying data exists at WisDOT but is not surfaced in any annual report we have located. What is publicly known is that the state has been issuing over 11,000 ignition interlock devices per year (LFB Informational Paper #61, January 2023, page 11) and that permanent license revocation under § 343.31(1m)(b) (4 or more counted offenses, unless the most recent one came more than 15 years after the one before it) is enforced administratively by the DOT every time the threshold is crossed.

Sources: WI Legislative Fiscal Bureau Informational Paper #61, January 2023 · WI DOT 2024 Traffic Convictions Entered on Driver Record File

The collateral consequences of a Class G, F, or E felony

A felony conviction at any of these tiers triggers cascading consequences that outlast the prison sentence:

• Lifetime federal firearm prohibition under 18 U.S.C. § 922(g)(1). Possession of any firearm or ammunition after conviction is itself a federal felony carrying up to 10 years.
• Wisconsin firearm prohibition under Wis. Stat. § 941.29. Possession after a felony OWI conviction is itself a Class G felony.
• Voting rights suspended under Wis. Stat. § 6.03(1)(b) until the sentence (including extended supervision) is fully discharged.
• Lifetime CDL disqualification under 49 CFR § 383.51 (the CDL has typically been gone since the 2nd OWI; the felony itself adds independent disqualification triggers).
• Immigration review for non-citizens. The analysis turns on the exact conviction statute and the record of conviction, and it belongs to immigration counsel before any plea. Do not assume a felony OWI is or is not removable.
• Federal subsidized housing eligibility restricted under 24 CFR § 5.854 and § 5.855.
• Federal employment closed in practice; security clearances are denied for felony convictions of this category.
• Professional license revocation across healthcare, education, finance, real estate, and law enforcement.

Defense strategies at the 5th-offense and higher tier

Prior-offense audit (highest leverage)

Detailed above. The single most productive defense at every felony tier. We file motions to strike defective priors as a matter of routine on every case at this level.

Stop, arrest, and testing challenges

The Fourth Amendment doesn't bend because the offense is a 5th, 7th, or 10th. Every challenge available in a 1st-offense case applies with higher stakes here. Successful suppression of the stop, the field-sobriety testing sequence, or the breath/blood result can collapse the case entirely.

Independent toxicology review

At every tier above the 4th offense, the BAC result drives sentence length and IID duration. We retain independent toxicologists to audit lab procedures, calibration records, and chain-of-custody documentation. Common productive areas:

• 20-minute observation period violations before breath testing
• Expired or improperly maintained calibration standards
• Blood drawn by unqualified personnel or without proper consent under § 343.305
• Lab analyst unavailable for cross-examination (Bullcoming v. New Mexico Confrontation Clause issues)

Treatment-court placement (where eligible)

Racine, Kenosha, and Walworth counties each operate a treatment-court program that, for the right defendant, can substitute intensive treatment plus judicial supervision for some portion of the statutory minimum. Eligibility narrows sharply above the 5th offense and is exceptional at the 7th and above, but it is worth pursuing aggressively when the facts support it. Successful completion can produce sentencing outcomes that the statutory minimum on its face does not allow.

Sentencing mitigation

Even when conviction is unavoidable, the sentence is not predetermined. The PSI report, treatment evaluations, employment record, family circumstances, and the mitigation package we present at sentencing materially affect:

• Whether the court reduces the mandatory minimum under the "best interests of the community" clause, which exists only in §346.65(2)(am)5 (the 5th/6th tier). Subds. (am)6. and (am)7. contain no reduction clause, so the 3-year and 4-year confinement floors are not discretionary
• Whether extended supervision conditions allow for AODA treatment in lieu of additional confinement
• Whether Huber privileges or electronic monitoring substitutes for closed-custody time
• The length of the IID requirement after reinstatement