Short answer: Minnesota uses different rules to count prior impaired-driving incidents. Criminal DWI enhancement generally looks back ten years, with separate lifetime felony triggers. For license and ignition-interlock consequences, the law effective August 1, 2025 uses a 20-year window for one prior incident, but certain consequences count two or more qualifying priors over a lifetime.
A prior can therefore be too old to raise the degree of the new criminal charge but still affect license and interlock consequences. Lifetime counting rules and separate plate-impoundment and vehicle-forfeiture provisions make a record-by-record analysis essential.
Lundgren & Johnson defends Minnesota DWI cases in Hennepin County, Ramsey County, and statewide. This guide explains what counts as a prior, how each clock is measured, and why an old license revocation can matter even when the related criminal charge was dismissed.
What Counts as a Prior
Minnesota counts a “qualified prior impaired driving incident,” a term that includes qualifying prior impaired-driving convictions and qualifying impaired-driving-related license losses. A conviction and license loss arising from the same course of conduct count only once.
- a qualifying DWI conviction, including a qualifying test-refusal conviction; and
- a qualifying loss of driving privileges arising from an impaired-driving incident.
For example, an implied-consent revocation can remain a qualified prior even when the associated criminal charge was dismissed. If the revocation was not judicially rescinded, the later dismissal does not erase that separate licensing event.
Qualifying convictions and license actions from other jurisdictions can count. Qualifying impaired-driving incidents involving motorboats, snowmobiles, and certain recreational vehicles can also count. Juvenile or unusual dispositions require closer statutory comparison rather than a categorical assumption.
The 10-Year Criminal Clock
For criminal charging, a qualified prior impaired-driving incident within the ten years immediately preceding the new offense is an aggravating factor. The same incident counts only once even if it produced both a conviction and a license loss.
For impaired-driving offenses other than criminal test refusal, the degree generally follows this framework, unless a lifetime felony trigger applies:
- no priors in ten years and no other factor: fourth degree, a misdemeanor;
- one aggravating factor: third degree, a gross misdemeanor;
- two or more aggravating factors, without a felony trigger: second degree, a gross misdemeanor;
- three or more priors in ten years: first degree, a felony.
Criminal test refusal follows different degree rules: refusal without an aggravating factor is generally third degree, and refusal with one aggravating factor is second degree. A qualifying felony trigger can still make the offense first degree.
The ten-year comparison is based on the date of the prior incident and the date of the new offense—not the later conviction date or the date driving privileges were reinstated.
Two felony-based triggers do not expire: a prior first-degree DWI conviction, and specified prior felony criminal-vehicular-operation convictions involving alcohol or controlled substances. Either can make a new DWI first degree regardless of age. Read our felony DWI penalties page for the sentencing consequences.
The 20-Year and Lifetime License Rules
Section 171.178 does not impose a universal 20-year cutoff. For ordinary DWI test-failure, test-refusal, and conviction-based licensing consequences, it distinguishes one qualified prior impaired-driving incident within 20 years from two or more qualifying priors without that time limit. These administrative rules did not replace the separate ten-year criminal-enhancement rule.
Under section 171.178, one qualifying prior within 20 years can require at least two years in ignition interlock. Two qualifying priors over a lifetime can require at least six years; three or more can require at least ten years. A current qualifying conviction with two or more qualifying priors can also trigger cancellation as inimical to public safety. That cancellation provision is not limited to priors within 20 years. Treatment and other reinstatement requirements also apply.
These administrative counting rules do not determine the degree of the criminal DWI charge. Criminal-vehicular-homicide and operation cases have additional licensing provisions. The full driving record and the specific statutory route must be reviewed before predicting the result.
Plate impoundment and vehicle forfeiture have separate 10-year rules; the new 20-year license window does not automatically control either remedy. Read our vehicle forfeiture and plate impoundment page for those distinct triggers and procedures.
Three Timelines
Timeline one: 2013 DWI; new offense in 2026. The 2013 incident is outside the ten-year criminal window but inside the 20-year administrative window. If there is no other aggravating factor, criminal test refusal, or lifetime felony trigger, the new charge may remain fourth degree while the license and interlock consequences reflect one prior.
Timeline two: 2018 implied-consent revocation; criminal charge dismissed; new offense in 2026. If the revocation remains valid, it is a qualified prior within both windows. It can aggravate the criminal charge and increase the administrative consequences even though the earlier criminal case was dismissed.
Timeline three: 2004 felony DWI; new offense in 2026. The prior felony remains a lifetime criminal trigger, so the new DWI can be charged as first degree. The 2004 incident is outside the 20-year window for the one-prior administrative rule, but that does not settle the license consequences. If the record includes two or more qualifying prior incidents over a lifetime, the repeat-offender interlock and cancellation provisions may still apply. Review the entire record, including incidents preceding the 2004 felony.
Why an Old Revocation You Never Fought Still Matters
Most people arrested for DWI do not challenge the implied consent license loss. It felt like part of the criminal case. Or the deadline passed. Or the criminal case was dismissed and it seemed over.
A valid license loss can raise the degree of a later DWI within ten years. It can also affect licensing under the 20-year or lifetime counting rules. Do not assume that dismissal of the old criminal charge removed the administrative prior.
The deadline to petition for judicial review of an implied-consent license revocation is generally 60 days after receiving the notice and order of revocation or disqualification. Missing it can forfeit the ordinary judicial-review route. Ask about the deadline immediately after an arrest. Our license reinstatement page explains the parallel licensing process.
Frequently Asked Questions
How long does a DWI stay on your record in Minnesota?
A DWI conviction remains on the record unless it is lawfully expunged, but different laws use different counting rules. Criminal enhancement generally uses ten years, with specified prior felonies remaining lifetime triggers. License and interlock rules include both a 20-year window for one prior and lifetime counting for certain repeat-offender consequences.
Does an implied consent revocation count as a prior DWI?
Yes. A qualifying impaired-driving-related license loss can count even if the criminal charge was dismissed. A conviction and license loss from the same course of conduct count as one incident, not two.
Did Minnesota change the lookback to 20 years?
Yes, for the one-prior window used in specified license and ignition-interlock provisions. That does not create a universal cutoff: certain consequences count two or more qualifying priors over a lifetime. Criminal charging, plate impoundment, and vehicle forfeiture continue to follow their own rules, including separate ten-year provisions.
Do out-of-state DUIs count in Minnesota?
A substantially similar out-of-state conviction or license action can qualify. Counsel should compare the foreign offense and record to Minnesota’s statutory definitions.
How many DWIs before it is a felony in Minnesota?
A fourth qualified impaired-driving incident within ten years can be first-degree felony DWI. A new DWI can also be a felony after certain prior felony DWI or criminal-vehicular-operation convictions, no matter how old.
How is the ten years measured?
The criminal ten-year period is measured from the date of the earlier incident to the date of the new offense. A conviction and related license loss from the same course of conduct count only once.
Talk to a Minneapolis DWI Lawyer
Determining which priors count—and for what purpose—can change both the criminal charge and the years of license restrictions. Lundgren & Johnson has more than 30 years of combined Minnesota DWI experience. Call (612) 767-9643 any time. We answer 24/7, and consultations are free.