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 back to January 1, 1989 under § 343.307(1). There is no 10-year window at any tier above the 2nd offense.

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. The state must prove each one. Under Wisconsin and federal precedent, a prior cannot be used for sentence enhancement if it has constitutional defects:

• Uncounseled prior with jail time (Nichols v. United States, 511 U.S. 738) cannot be used to elevate a current charge to felony status.
• Defective plea colloquy: failure to advise of rights, of the elements of the offense, or of the maximum penalty can void the prior for enhancement purposes.
• Jurisdictional defect: the prior court must have had proper jurisdiction over the defendant and the offense.
• 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.
• Out-of-state conviction not "substantially similar": not every Illinois, Iowa, Michigan, or Minnesota DUI counts under Wisconsin's § 343.307(1) cross-counting rule. Court-supervision dispositions and statutory-summary-suspension records sometimes do not qualify as a Wisconsin "conviction" for charging purposes.

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?

Wisconsin records roughly 20,000 to 23,000 total OWI convictions per year across all offense tiers. The Wisconsin DOT's "Traffic Convictions Entered on Driver Record File" reported 22,917 OWI convictions in 2022 (plus 13,946 BAC-prohibited convictions, 252 OWI-causing-injury, and 47 commercial OWI convictions). The Wisconsin Legislative Fiscal Bureau's Informational Paper #61 reports 18,999 OWI convictions in 2021 and a longer-term decline of about 28.7% since 2012.

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, page 11) and that permanent license revocation under § 343.31(1m)(b) (the 4-or-more counted convictions / 15-year window trigger) is enforced administratively by the DOT every time the threshold is crossed.

Extreme cases on the public record: Wisconsin holds one of the highest documented per-defendant OWI conviction counts in the United States. News reporting in 2021 covered the case of a Green Bay defendant receiving an 18th OWI conviction. (News-sourced color, not government dataset.)

Sources: WI Legislative Fiscal Bureau Informational Paper #61, January 2023 · WI DOT 2022 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 consequences for non-citizens. Felony OWI is treated as a removable offense in many circuits.
• 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 (am)5/6/7 "best interests of the community" provision
• 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