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The #1 Most-Installed Ignition Interlock Device in the U.S.

The #1 Most-Installed Ignition Interlock Device in the U.S.

Overcoming a DUI is stressful. Intoxalock’s IID has helped over 1.2 million drivers work toward regaining their licenses and get back on the road. Get yours installed nearby through the largest service center network today!

Overcoming a DUI is stressful. Intoxalock’s IID has helped over 1.2 million drivers regain their licenses and get back on the road. Get yours installed nearby through the largest service center network today!

An image of a hand holding an IID in a car.

Proven + Easy to Use: Intoxalock IIDs

After a DUI, you may need to install an ignition interlock device (IID), a breathalyzer that stops your car from starting if it detects alcohol on your breath. Intoxalock simplifies the process with the nation’s largest network of nearly 6,000 certified service centers, accurate, reliable technology, and real support backed by 50,000+ five-star reviews.

  • One-Button Activation: Start your car quicker without complicated steps or controls. 
  • Easy Blow Pattern: Simple blow-inhale-blow pattern make our IIDs simple and intuitive. No simultaneous humming required. 
  • Easy-to-Read LED Screen: Clear, straightforward instructions and instant test results so you always know what action is needed. 
  • Fast Warm-up Time: Quick startup, even in cold climates, means you’re ready to go in no time.
  • Bilingual Programming: Instructions can be programmed in English or Spanish. 
Call to Start Your IID Journey: 833-800-3793

The Safer and Smarter You Drive, the Lower Your Bill*

Intoxalock base lease rates start as low as $1.96 per day*

That’s typically less than daily public transportation!

Includes:

  • Monthly or bi-weekly billing to fit your budget
  • 24/7 customer service
  • Automatic payments with billing reminders
  • Free account management app

*Additional required purchases. Prices vary by state. Incidental fees can occur if equipment needs to be unlocked due to multiple failed BrAC tests, or isn’t returned on time at the end of the lease term.

Installation + Removal

Paid separately to service center. Rates vary by vehicle.

Calibration Appointments

Required every 1-3 months per state mandate, paid directly to service center.

We Make Getting Back on the Road Simple

1

Contact

Call 833-800-3793 or fill out the form to speak confidentially with one of our friendly experts and receive a no-obligation quote. Our state specialists are experts on IID requirements and can make sure you start your IID journey stress-free.

2

Install

Schedule your quick and convenient installation! Over 90% of customers live within 15 minutes of a location, and 2,000+ offer same-day installation. Certified technicians will make sure you know everything about your IID before you drive away.

Find A Location Near You

3

Stay Safe

Your ignition interlock is designed to help keep you and others safe on the road. Be sure to take all tests and follow through with any prompts from your IID. If you need us—we’re there! Access 24/7 bilingual support, live chat, and a self-service mobile app for assistance. 

4

Graduate

We’ll handle state reporting once you’ve confirmed you’ve met your requirement. Now you can return to a service center for device removal or keep using it voluntarily at a discount. Congratulations, you’re one of 1.2 million+ drivers who have regained driving privileges safely with Intoxalock. 

Trusted Expertise. Real Results.

With more than 50,000 five-star Trustpilot reviews, Intoxalock is America’s most-installed IID provider - count on easy-to-use, reliable tech and helpful support every step of the way. 

Learn More About Why Customers Trust Intoxalock IIDs

Clear Step-by-Step Guidance

Talk to a specialist who knows your state's requirements and can guide you through next steps.

Get Help: 833-800-3793

Easy and Reliable Devices

Watch instructional videos showing how easy it is to use an Intoxalock device.

Browse Videos

Process Transparency

See what to expect—learn what your state typically requires and how Intoxalock helps you successfully meet your IID requirement.

Select Your State

Tips + Advice to Succeed with Your IID

09/30/2025 | Blog

What to Expect at an Ignition Interlock Installation Appointment

04/24/2025 | Blog

Can an Ignition Interlock Be Installed on Any Make and Model Car?

08/26/2024 | Blog

How Long Can a Breathalyzer Detect Alcohol? What You Need to Know

FAQs: We’re Here to Answer Your Questions

What is an ignition interlock device (IID)?

An ignition interlock device (IID) is a car breathalyzer system installed in your vehicle to prevent a car from starting if alcohol is detected on the driver’s breath and may be required following a DUI violation. The IID device includes a mouthpiece for breath sampling, a handheld unit that measures breath alcohol content (BrAC), and a cord connecting the system to your vehicle’s ignition.

Want to know more about how an IID works? Watch our video

How much does an ignition interlock device cost?

The cost of an IID  typically ranges from $70 to $120 per month but varies by state and vehicle type. Additional purchases required, such as installation, calibration, and removal. Incidental fees can occur if equipment needs to be unlocked due to multiple failed BrAC tests, or isn’t returned on time at the end of the lease term. Intoxalock offers competitive pricing and the best value with nationwide service centers and 24/7 support.

Call Intoxalock now at 833-818-5066 or fill out the form above to get an accurate quote on your new ignition interlock device and start driving safely today!

How long will my IID installation take?

The installation of an ignition interlock device typically takes about one to four hours, depending on your vehicle type and the complexity of the installation. Intoxalock service centers work efficiently to get you back on the road as quickly as possible. Let your Intoxalock representative know if you drive an electric-powered vehicle or hybrid to get a more accurate time and cost estimate.

How can I find the closest IID installation location?

With more than 5,500 service center locations across the country, Intoxalock can get you back on the road in no time! Simply click here to find the closest installation location near you. Over 90% of Intoxalock customers live within 15 minutes of a service center so you’re bound to find one that works for you – and many offer same-day installation options.

State Approved
Call Us Anytime at 833-818-5066
Intoxalock is an approved interlock provider in 46 states. Talk to a state specialist today for step-by-step assistance.
Intoxalock is an approved interlock provider in 46 states. Talk to a state specialist today for step-by-step assistance.