Utah law requires all DUI offenders to install an ignition interlock device (IID) on any vehicle they operate. First-time offenders must keep the device for 18 months. Repeat offenders face a minimum of 3 years. The IID prevents a vehicle from starting if the driver’s breath alcohol exceeds a preset limit.
Last updated: July 2026
Key Takeaways
- Ignition interlock devices are mandatory for all DUI convictions in Utah, no exceptions.
- First offense requires 18 months of IID use; second and subsequent offenses require 3 years.
- Only DLD-approved providers can install and service IIDs in Utah.
- Tampering with or circumventing an IID is a class A misdemeanor with separate penalties.
- An interlock restricted driver’s license allows limited driving privileges during the suspension period.
Utah’s ignition interlock program is governed by Utah Code Section 41-6a-518.2. The law applies to every person convicted of any DUI-related offense, including alcohol and drug DUI, regardless of blood alcohol concentration level. The device must be installed on every motor vehicle the offender owns or operates. This includes employer vehicles unless the employer provides a written exemption.
What many Utahns do not realize is that the IID requirement runs separately from the license suspension period. Even after your suspension ends and your regular driving privileges are restored, the interlock mandate continues. This often catches people off guard. A first offender whose license is reinstated at month 4 still owes 18 full months of IID time. The clock starts on the date of conviction, not the date of installation or the date of release from jail.
How does the Utah ignition interlock device actually work?
An ignition interlock device is a handheld breath alcohol tester wired into your vehicle’s ignition system. Before the engine can start, you blow into the device. If your breath alcohol concentration (BrAC) exceeds the calibrated limit, typically 0.02 or higher, the vehicle will not start. During operation, the device prompts random rolling retests to ensure the driver is still sober. If a retest is missed or failed, the vehicle records the event and eventually sounds the horn until the engine is turned off.
All IIDs in Utah must meet the National Highway Traffic Safety Administration (NHTSA) model specifications for ignition interlock devices. The devices record every test, missed test, and attempt to circumvent the system. These logs are downloaded at each calibration appointment and reported to the Utah Driver License Division (DLD). Consistent failed tests or tampering events can result in extended IID time or additional penalties.
According to the Utah DLD, over 8,000 ignition interlock devices are actively monitored in the state at any given time. Noncompliance rates have dropped significantly since the program switched to real-time data reporting in 2023.
Who needs an ignition interlock device in Utah?
Every person convicted of a DUI in Utah must install an IID. There is no judicial discretion on this point. Utah Code Section 41-6a-518.2 uses mandatory language: the court shall order the installation of an ignition interlock device for any person convicted of a DUI violation. This applies to first-time offenders, repeat offenders, and those convicted of alcohol-related reckless driving that was reduced from a DUI charge.
There is one narrow exception. If the offender certifies to the court that they do not own or operate any motor vehicle and will not drive during the IID period, the court may waive the requirement. However, lying on this certification is perjury, and driving without an IID during a mandated period is a separate criminal offense. Most defense attorneys advise clients to simply comply with the IID requirement even if it is inconvenient.
What are the approved IID providers in Utah?
The Utah DLD maintains a list of approved ignition interlock device providers. These companies must meet state certification standards and provide 24-hour customer support. The current approved providers include Intoxalock, LifeSafer, Smart Start, Draeger, and Low Cost Interlock. Each provider offers similar technology, but installation fees and monthly monitoring costs vary.
| Provider | Typical Installation Fee | Monthly Monitoring Cost | Mobile Service Available |
|---|---|---|---|
| Intoxalock | $70 – $100 | $80 – $110 | Yes |
| LifeSafer | $75 – $95 | $75 – $100 | Yes |
| Smart Start | $60 – $90 | $70 – $95 | Yes |
| Draeger | $80 – $110 | $85 – $105 | Limited |
| Low Cost Interlock | $50 – $80 | $60 – $90 | Yes |
How much does an ignition interlock device cost in Utah?
The total cost of an IID in Utah typically ranges from $600 to $1,800 for an 18-month period. This includes the initial installation fee, monthly calibration and monitoring fees, and any removal fees at the end of the requirement. Some providers also charge a modest fee for downloading data or replacing the device after a violation. Installation fees range from $60 to $110. Monthly monitoring fees range from $60 to $110 per month. Most providers offer payment plans, and some offer reduced rates for low-income offenders who qualify based on federal poverty guidelines.
Utah law requires approved providers to make IIDs available at reasonable cost and prohibits them from charging more than the DLD-established maximum rates. As of 2025, the maximum installation fee is $120 and the maximum monthly fee is $115. Offenders who own more than one vehicle must install a device on each vehicle, though many providers offer a reduced multi-vehicle rate of roughly 50 to 75 percent of the primary device monthly fee.
What are the penalties for tampering with an IID in Utah?
Tampering with, circumventing, or attempting to disable an ignition interlock device is a class A misdemeanor in Utah. This includes having another person blow into the device, starting the vehicle without blowing, or physically disconnecting or bypassing the interlock system. Penalties for a class A misdemeanor in Utah include up to 364 days in jail and a fine of up to $2,500. In addition to criminal penalties, the DLD may extend the IID requirement by an additional period or revoke driving privileges entirely.
The device itself detects many forms of tampering. Anti-circumvention features include rolling retests during operation, tamper sensors that detect attempted disconnection, and cameras on newer models that photograph the person providing the breath sample. Every instance of tampering or circumvention is logged and reported to the DLD and the court. Prosecutors in Utah treat IID violations seriously, and a tampering charge can complicate an existing DUI case or probation status.
What is an interlock restricted driver’s license in Utah?
An interlock restricted driver’s license, sometimes called an IRL or restricted permit, allows a person whose license was suspended due to a DUI to drive during the suspension period, provided an IID is installed on the vehicle. This is distinct from the regular IID requirement that continues after the suspension ends. To obtain an interlock restricted license, you must apply through the DLD, pay the required fees, provide proof of IID installation, and file an SR-22 insurance certificate.
The interlock restricted license allows driving to work, school, medical appointments, and court-ordered treatment programs. Some restrictions may be stricter depending on the specifics of your case. If you drive without an IID while on interlock restricted status, you face immediate revocation of the restricted license and additional charges. The DLD maintains a strict monitoring program for restricted license holders, and any violation can result in a longer restriction period.
How do you get an IID removed early in Utah?
The IID requirement is a minimum period. Early removal is not available for the mandated period itself, but you must complete the full term and then file a completion form with the DLD. The process involves having your provider submit a final compliance report, passing any final review by the DLD, and paying the removal fee. If you have violated the IID terms during the requirement period, the DLD may extend the period rather than allow removal at the scheduled end date.
Some offenders qualify for a reduced IID period if they participated in an alcohol treatment program and received a favorable progress report. Utah Code Section 41-6a-518.2 allows the court to reduce the IID period by up to 50 percent for offenders who complete treatment and remain in compliance. This reduction is not automatic. Your attorney must file a motion with the court, and the court has discretion on whether to grant it. Early removal based on treatment completion is most common with first-time offenders who have no aggravating factors in their case.
Frequently Asked Questions
Do I need an IID for a first-time DUI in Utah?
Yes. Utah law requires an ignition interlock device for every DUI conviction, including first offenses. The minimum period is 18 months from the date of conviction.
Can I drive someone else’s car without an IID?
No. If you are required to have an IID, you may not operate any motor vehicle that does not have a functioning device installed. This includes rental cars and borrowed vehicles.
Does Utah require IIDs for drug DUIs?
Yes. Utah’s IID law applies to all DUI convictions, including drug DUIs and those involving controlled substances. The device detects breath alcohol only, but the legal requirement still applies.
What happens if I fail a rolling retest?
A failed rolling retest is recorded and reported to the DLD. Depending on the frequency and timing of failures, your IID period may be extended or additional sanctions may be imposed.
Can I remove my IID if it is a financial hardship?
You may petition the court for a hardship reduction, but removal is rare. Some providers offer reduced rates for qualifying low-income offenders. You must continue paying during the petition process.
Does Utah accept out-of-state IIDs?
Only if the device is from a DLD-approved provider and the installation is certified by a licensed Utah technician. Out-of-state installations must be transferred to a Utah provider within 30 days.
How often must the IID be calibrated?
Calibration is required every 30 to 60 days depending on the provider. You must bring the vehicle to an authorized service center for data download and recalibration at each appointment.
What happens if my IID battery dies?
Most IIDs have a low-battery warning system. If the battery dies, the vehicle may not start. You should contact your provider immediately for troubleshooting or a replacement device.
Need legal help with Utah IID requirements?
Ignition interlock requirements in Utah are mandatory, technical, and easy to violate by accident. An experienced Utah DUI defense attorney can help you navigate the IID process, apply for a restricted license, and ensure you comply with every requirement so you do not face extended periods or additional charges.
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This article is for informational purposes only and does not constitute legal advice. Consult with a qualified Utah criminal defense attorney for advice specific to your situation.
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