Ignition interlock in Arizona
In Arizona, an ignition interlock is a breath tester connected to your vehicle, and what matters next is when your required time starts and which license lets you drive.
- Typical time on the device
- 12 months
- Agency in charge
- Arizona MVD
- Companies installing
- 7
- Your clock starts
- reinstatement eligibility or the day MVD gets your conviction, whichever is later
- State fee
- $20 for each device put in or moved to another car
- Device check
- MVD needs proof at least every 90 days
7 interlock companies in Arizona
| Company | From, a month | Installation | 12 months, install included | Trustpilot |
|---|---|---|---|---|
 LifeSafer | From $50 | $70 to $150 | From $670 | 4.6 of 5 |
 Guardian Interlock | From $50 | $70 to $170 | From $670 | 3.7 of 5 |
 Smart Start | From $59.99 | From $150 | From $869.88 | 4.6 of 5 |
 ALCOLOCK | From $60 | $70 to $150 | From $790 | 2.3 of 5 |
 Low Cost Interlock | From $78.76 | $100 to $250, plus $40 set-up | From $1,085.12 | 2.9 of 5 |
 Intoxalock | $90 to $102Arizona price | Set by each service center | $1,150 to $1,374install at MADD's typical range | 4.4 of 5 |
 Alcohol Detection Systems (ADS) | Call for a quote | 2.4 of 5 | ||
Rows marked "Arizona price" use a price posted for Arizona; the others show each company's national starting price. The 12-month column adds a year of that price, the install price and any set-up fee, or MADD's typical $70 to $150 where no install price is posted.
The Arizona price for Intoxalock comes from its Arizona pricing page. MADD's national range: $70 to $150 to install, then $60 to $80 a month, or $790 to $1,110 for a year.
Arizona ignition interlock law
| Offense | Interlock rule |
|---|---|
| First DUI or extreme DUI (0.15 to 0.199) | 12 months |
| Super extreme DUI (0.20 or more) | 18 months |
| Second DUI within 84 months | 12 months; if the reading is 0.20 or higher, it's 24 months |
| Aggravated DUI, including a third in 84 months | 24 months |
Where these rules come from: Arizona Revised Statutes 28-3319.
When your interlock clock begins
The program is run by the Motor Vehicle Division through its Ignition Interlock Unit. Your required time starts on the date you become eligible to reinstate or the day MVD gets your conviction, whichever comes later, so installing early won't shorten anything. Ready to arrange an installation? Call us, and we'll pass your request to an installer serving Arizona who can set up your appointment.
Any device that is newly installed, transferred or replaced in Arizona has to come with a camera, GPS and real-time reporting. That rule took effect July 1, 2018.
A license you can legally drive with
If your license is suspended, including after a test refusal, you can apply for a special ignition interlock restricted driver license (SIIRDL) once any ordered alcohol screening is done, under Arizona law. With this license you can drive anywhere in the state, provided the car you're in has an interlock.
To qualify, the device has to go in during the 90 days leading up to the license being granted, and the install must be reported to MVD electronically. An SR-22 is required too. That's insurance proof your insurer files with the state. All fees have to be paid as well, according to MVD.
Nobody has to apply for the special license. But if you do, you give up your right to a hearing, so think that through first.
Does time on the special license count?
Yes, provided the license date falls after January 1, 2023 and you're older than 21. Months driven on it then count toward your full interlock requirement.
What an interlock costs in Arizona
Prices vary by company. The only charge fixed by the state is the $20 fee, which your installer collects for each device installed or transferred. In Arizona, Intoxalock quotes a monthly lease ranging from $90 to $102.
Using MADD's national averages, a device for 12 months runs roughly $790 to $1,110 altogether. For 24 months, expect roughly $1,510 to $2,070.
Failing a breath test
Above 0.02, the device will refuse to start the car. A failed test over that limit gets reported to MVD and may extend your requirement by 6 months. Trying to tamper with the device or bypass it can cost you an extra 6 to 12 months.
The priciest mistake is getting convicted for driving a car with no interlock. That tacks on a full year past the point when your original requirement would have run out.
Keeping the device checked every 90 days
A calibration is the routine service visit that keeps the device reading accurately. Proof of each check must reach MVD at least every 90 days, so it helps to book your next visit before you leave. Making every appointment keeps your record clean, and it is also a condition for the 6-month early removal.
Early removal at 6 months?
Yes, for some first-time standard DUIs, through a deferment that allows early removal. The device comes off at 6 months, and you then complete a 6-month probationary period. To be eligible, your first 6 months must be violation-free and you have to show up to every appointment on your schedule.
Before removal, look yourself up on AZ MVD Now to make sure you're cleared to have it taken off.
Arizona's interlock law change for 2026
House Bill 2573 eliminates the 45-day revocation wait that used to apply to drivers with a second DUI. That wait used to stand between them and the special interlock restricted license. The bill was signed by the governor on June 4, 2026 and became Chapter 99.
The other requirements for the special license still apply.