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Minnesota’s ignition interlock program lets many drivers with a DWI revocation drive legally if a breath-testing device is installed in their vehicle. It is optional for most first offenses and required for drivers with a prior DWI incident within 20 years, for at least 2, 6 or 10 years depending on the number of priors.
If you’re arrested for driving while impaired (DWI) in Minnesota, one of the biggest concerns is whether you’ll lose your driver’s license. Minnesota law allows certain drivers to regain limited driving privileges through the ignition interlock device (IID) program.
The program requires installing a small breath-testing device in your vehicle that measures alcohol levels before the car can start. If alcohol is detected, the engine will not start.
At Martine Law, our DWI attorneys help clients understand the ignition interlock program and explore whether it’s the best option for restoring their driving privileges.
Who is required to use the ignition interlock?
Not everyone charged with DWI has to use an ignition interlock. It is typically required for:
- Repeat DWI offenders
- Drivers with high blood alcohol concentration (BAC) (0.16% or higher)
- Drivers seeking to shorten or avoid long license revocations
- Drivers convicted of felony-level DWI
For many, the choice is either enroll in the IID program or remain without a license for months or years.
How the program works
The ignition interlock device is installed in your vehicle by a certified vendor. Here’s how it operates:
- Initial breath test: You must blow into the device before starting the car.
- Rolling retests: While driving, you may be required to blow again to ensure no alcohol was consumed after starting.
- Data recording: Each test result is logged and reported to the Department of Public Safety (DPS).
- Violations: If alcohol is detected or the device is tampered with, the violation is reported, and your time in the program may be extended.
License options under ignition interlock
Minnesota offers two main license types through the IID program:
- Limited license: Allows you to drive for essential purposes, such as work, school, or treatment.
- Full license with interlock restriction: You can drive anywhere, but only with the IID installed.
Which option you qualify for depends on your BAC level, number of prior DWIs, and other factors.
Costs of the ignition interlock program
The driver is responsible for the costs of participating in the program. Typical expenses include:
- Installation: set by the vendor
- Monthly monitoring fee: set by the vendor
- Removal fee: set by the vendor
Ask the vendor for a written quote before you enroll. However, many clients see it as worth the expense to regain driving privileges.
How long must you use ignition interlock?
The length of time depends on the severity of the offense and prior record:
- First DWI under 0.16: optional, lets you drive during the revocation
- First DWI at 0.16 or higher: through the revocation of at least 1 year
- One prior within 20 years: at least 2 years
- Two priors: at least 6 years
- Three or more priors: at least 10 years
If you violate program rules, the time is extended by 180 days, then 1 year, then 545 days for later violations (Minn. Stat. 171.306, subd. 5).
Benefits of the program
While it may feel restrictive, the IID program offers key benefits:
- Lets you continue driving legally rather than facing a long revocation
- Demonstrates responsibility to the court and probation officers
- Helps maintain employment, education, and family responsibilities
- Can reduce the overall length of license revocation
Defenses and alternatives
Not everyone is automatically eligible, and some may want to challenge the requirement. A Minnesota DWI lawyer can help by:
- Challenging the validity of the breath test that triggered the requirement
- Reviewing whether the Department of Public Safety followed proper procedure
- Exploring options for limited driving privileges without ignition interlock
In some cases, successfully fighting the DWI charge altogether may prevent the need for IID.
Key takeaways
- The ignition interlock program allows certain Minnesota DWI offenders to regain driving privileges.
- It requires blowing into a device before starting your car and sometimes while driving.
- Costs and requirements vary depending on your record and BAC level.
- Repeat or high-BAC offenders typically face longer IID requirements.
- An experienced attorney can help you understand eligibility, costs, and possible alternatives.
Charged with DWI and worried about losing your license?
At Martine Law, we guide clients through Minnesota’s ignition interlock program and fight to protect their driving rights.
Contact us today to discuss your case with a Minnesota DWI attorney.
Call (612) 979-1305 for a free consultation. Phones and chat are answered 24/7, with AI covering when no staff is free.
Frequently asked questions
Is ignition interlock mandatory after a first DWI in Minnesota?
Usually not. For a first offense under 0.16, interlock is optional and lets you drive during the revocation. At 0.16 or more, interlock is the main way to drive during the one-year revocation. It becomes mandatory with a prior incident within 20 years.
How long do you have to use ignition interlock in Minnesota?
With one prior in 20 years, at least 2 years. With two priors, at least 6 years. With three or more, at least 10 years. Treatment must also be completed before full reinstatement.
What happens if I fail an interlock test?
Breaking program rules, tampering with the device or driving a vehicle without one extends your time in the program: 180 days for a first violation, 1 year for a second and 545 days for later violations. Ask your lawyer whether a specific test result counts as a violation.
Can I drive any car while on ignition interlock?
No. You may only drive vehicles equipped with a certified interlock device, and your license will show the interlock restriction.
Related guides
For an overview of the law and how we help, see our Minnesota DWI defense page.
