Minnesota DWI License Revocation: First Offense vs. Second, Test Failure vs. Refusal

TL;DR

• A first DWI offense with a BAC under 0.16 triggers a 90-day revocation; at 0.16 or above, it is a 1-year revocation.
• Test refusal carries a 1-year revocation on a first offense, the same as a high-BAC test failure.
• A second alcohol offense within 20 years requires mandatory Ignition Interlock Device Program (IIDP) participation for 2 years before full driving privileges are restored.
• Third and subsequent offenses result in license cancellation and denial as "inimical to public safety," requiring 6 or 10 years on the IIDP, respectively.
• Treatment is not required for first offenses, but becomes mandatory for all second and subsequent offenses.
• A limited license ("work permit") is available after 15 days of revocation on eligible first offenses.

What Determines Your Revocation Period in Minnesota?

Three variables determine Minnesota's license revocation length: (1) how many qualified prior impaired driving incidents (QPIDIs) you have had within the past 20 years, (2) your BAC at the time of testing or whether you refused, and (3) whether the offense involved injury or death. These factors interact to produce outcomes ranging from 30 days to a lifetime cancellation.

Under Minn. Stat. § 171.178 (2025), the Minnesota Department of Public Safety administers license revocation, cancellation, and reinstatement. The statute distinguishes between:

• Test failure (a recorded BAC result)
• Test refusal (declining to submit to a chemical test) * First offense (no QPIDI within the past 20 years)
• Second offense (one QPIDI within the past 20 years)
• Third or subsequent offense (two or more QPIDIs on record) A "qualified prior impaired driving incident" is defined under Minn. Stat. § 169A.03, subd. 22, and includes prior DWI convictions, license revocations, and certain out-of-state equivalents.

First DWI Offense in Minnesota: Test Failure Revocation Periods by BAC Level

On a first DWI offense with no QPIDIs in the past 20 years, a BAC under 0.16 results in a 90-day revocation. A BAC of 0.16 or above doubles that to 1 year. In both cases, the Ignition Interlock Device Program is optional, treatment is not required, and a limited license is available after 15 days.

BAC Under 0.16: 90-Day Revocation

• Revocation period: 90 days (180 days if the driver is under 21)
• Revocation start date: 14 days after the offense date
• IIDP: Permissive (the driver may choose to wait out the revocation without enrolling)
• Treatment: Not required
• Limited license: Available after 15 days of revocation

If the driver is convicted and has no QPIDIs within the past 20 years, the revocation period may be administratively reduced to 30 days (or 120 days if the offense involved injury or death). See Minn. Stat. § 171.178, subd. 5(a)(1)(i).

BAC of 0.16 or Above: 1-Year Revocation

• Revocation period: 1 year
• Revocation start date: 14 days after the offense date
• IIDP: Permissive
• Treatment: Not required
• Limited license: Available after 15 days of revocation
• No administrative reduction available for high-BAC offenses, regardless of the convicted offense

The 0.16 threshold represents twice the legal limit of 0.08 and triggers an automatic doubling of the revocation period. This applies regardless of whether the ultimate criminal conviction is for a lower-level offense.

First DWI Offense in Minnesota: What Happens to Your License If You Refuse a Breath Test?

Refusing a chemical test on a first offense results in a 1-year revocation, the same as a high-BAC failure. Revocation begins 7 days after the offense (earlier than test failure cases). The IIDP is optional, and treatment is not required. An administrative reduction to 90 days is available upon conviction with no prior QPIDIs.

• Revocation period: 1 year
• Revocation start date: 7 days after the offense date (note: an amendment to Minn. Stat. § 171.177, subd. 8(c)(2) affecting this date is pending in the next legislative session)
• IIDP: Permissive
• Treatment: Not required
• Limited license: Available after 15 days of revocation
• Administrative reduction: Available to 90 days upon conviction with no QPIDI in 20 years (180 days if injury or death was involved)

Refusal is treated as seriously as a high-BAC failure under Minnesota law. The earlier revocation start date (7 days vs. 14 days for test failure) means a driver loses their license sooner. Attorneys sometimes advise clients to consider this tradeoff, but the decision involves a case-specific strategy.

Second DWI Offense in Minnesota: Why BAC No Longer Matters and IIDP Becomes Mandatory

Any second alcohol offense within 20 years -- regardless of BAC level or test refusal -- results in a mandatory 2-year IIDP period before full driving privileges are restored. There is no option to wait out the revocation. Treatment is also mandatory.

Under Minn. Stat. § 171.178, subd. 4(2) and 3(2), a person with one QPIDI within the past 20 years faces the same outcome whether their BAC was 0.08 or 0.20, or whether they refused testing:

• Revocation period: Until IIDP completion (minimum 2 years)
• Revocation start: Upon admission to the IIDP
• IIDP: Mandatory
• Treatment: Required (must complete a licensed substance use disorder treatment program)

The 2-year IIDP clock does not begin until the driver enrolls. Delaying enrollment extends the total time before full reinstatement.

Third or Subsequent DWI in Minnesota: License Cancellation, Denial, and Mandatory IIDP Timelines

Drivers with two or more QPIDIs who are convicted of a new DWI offense face license cancellation and denial as "inimical to public safety" under Minn. Stat. § 171.178, subd. 7. A third offense requires 6 years on the IIDP; a fourth or subsequent offense requires 10 years. These periods begin only upon IIDP enrollment.

Both require mandatory IIDP participation and completion of a licensed substance use disorder treatment program before full driving privileges may be restored.

IIDP Violation Extensions (Minn. Stat. § 171.306, Subd. 5)

Violations while enrolled in the IIDP extend the required participation period:

• First violation: +180 days
• Second violation: +1 year
• Third or subsequent violation: +545 days per violation

All extensions are consecutive, not concurrent.

IIDP Termination and Re-entry Rules

If a participant commits an act involving alcohol that results in a new license revocation, they are terminated from the IIDP and must reapply and restart. Credit rules vary:

1. Voluntary withdrawal and re-entry: Full credit for time already accumulated is retained.
2. Positive BAC (0.02+) or non-driving alcohol conviction after completing treatment: Must restart any required abstinence period, but receives one-half credit for prior IIDP time.
3. New revocation under § 171.178, subd. 3, 4, 5, or 6: No credit for accumulated time.

Minnesota DWI First vs. Second Offense: IIDP, Treatment, and Revocation Compared

The most significant structural difference between a first and second offense is not the revocation length per se, but whether the IIDP is mandatory and whether treatment is required. First offenses allow the driver to simply wait out the revocation. Second offenses do not.

Criminal Vehicular Operation and Homicide: Extended Cancellation Periods

Convictions for criminal vehicular operation (CVO) or criminal vehicular homicide (CVH) under Minn. Stat. § 609.2112-2114 trigger separate cancellation periods under § 171.178, subd. 6 and 8. These periods range from 2 years (first CVO, bodily harm) to lifetime cancellation (third or subsequent CVH).

Criminal Vehicular Operation Cancellation Periods

Criminal Vehicular Homicide Cancellation Periods

All CVO and CVH cancellations require mandatory IIDP participation and treatment. Cancellation begins upon IIDP admission.

Minnesota DWI License Revocation: Common Questions About Reinstatement, Limited Licenses, and Prior Offenses

Can I drive at all during a revocation period?

On a first offense, a limited license ("work permit") is available after 15 days of revocation. This applies to test failure and test refusal cases where the driver has no QPIDIs in the past 20 years.

Does it matter what I'm convicted of versus what I was charged with?

Yes, in some cases. For first offenses under 0.16, the revocation may be administratively reduced upon conviction. However, for offenses involving a BAC of 0.16 or above, no administrative reduction is available regardless of the convicted offense.

What counts as a "qualified prior impaired driving incident"?

A QPIDI includes prior DWI convictions, license revocations for DWI-related conduct, and certain equivalent out-of-state incidents. The full definition is in Minn. Stat. § 169A.03, subd. 22. Counting rules are governed by § 169A.09.

When does my revocation period actually start?

• Test failure: 14 days after the offense date
• Test refusal: 7 days after the offense date
• Second offense / IIDP-mandatory cases: Upon admission to the IIDP

Does treatment speed up reinstatement?

For first offenses, treatment is not required and does not affect the revocation timeline. For second and subsequent offenses, completing a licensed substance use disorder treatment program is a mandatory precondition for reinstatement -- it does not shorten the IIDP period but must be completed before full privileges are restored.