Do you need a fast set up and interlock installed?
Smart Start Interlocks: Your partner for effective alcohol interlock solutions in NZ

How to Get an Alcohol Interlock Licence in NZ | Smart Start

If you've been issued an Alcohol Interlock Sentence/Order due to drink driving offences, the interlock is the legal pathway to driving again in New Zealand. While the process can feel technical and overwhelming at first, it follows a clear sequence. And once you understand each step, from approval through alcohol interlock installation and into the transition phase, it becomes far more manageable.

This guide explains the full process in plain language, with a focus on what matters most to licence holders: timelines, costs, and how to avoid delays so you can legally regain your independence.

What an Alcohol Interlock Is and Why It Is Required?

A Smart Start alcohol interlock is a breath-testing device installed in the ignition of your vehicle. Before the engine starts, you must provide a breath sample that registers zero alcohol. The system also requires random tests while driving; it beeps to let you know a test is required, and it gives you five minutes to take the test.

The interlock NZ programme is designed as a safety measure. It allows you to drive legally under supervision, while demonstrating consistent compliance with zero-alcohol requirements.

For licence holders, the ignition interlock device quickly becomes part of your daily routine. You feel the click of the handset connecting, hear the beep prompting a test, and wait a few seconds for the clear signal to start the car. Over time, it becomes familiar and predictable.

How to Get an Alcohol Interlock Licence in NZ: A Step-By-Step Process 

The process to obtain an interlock licence follows a set order. Missing a step can delay approval, so accuracy matters.

  1. Receive an Alcohol Interlock Order from the court
  2. Wait for your disqualification period to end (usually 28 days)
  3. Apply for an interlock licence at a licensing agency
  4. Call Smart Start to book an interlock installation
  5. Have the alcohol interlock device installed at an authorised service centre

Smart Start Interlocks has over 80 service centres nationwide, making it easier to find a location close to home or work. View Smart Start Interlocks service centres to get started.

Understanding Alcohol Interlock Device Costs in NZ

Many drivers want to understand the alcohol interlock device cost in NZ before booking an installation. Monthly leases start from $149 and include more than just the device. Your lease covers warranty for theft or faults, along with the required monthly calibration and servicing.

The standard interlock installation cost is $199, with removal at the end of the programme costing $149. If you qualify for the subsidy, both of these fees are free. The subsidy also covers licence fees and contributes $50 per month toward your lease. The interlock device must also be serviced regularly to remain compliant. These visits are an NZTA requirement to download your interlock data, check the device, and calibrate it to detect and prevent faults that could affect your licence status.

Not sure if you qualify for the financial support? Smart Start can help check your eligibility for financial assistance that may be available through the NZTA alcohol interlock programme subsidy. Eligibility depends on individual circumstances, and Smart Start can explain how you can apply.

For a personalised cost breakdown, contact us and request a quote.

Daily Use and Support During the Alcohol Interlock Programme

During the interlock NZ programme, consistency is key. Each drive begins with a breath test into the personal breathalyser Smart Start device, and random rolling tests may occur while driving. Audible alerts guide you clearly, and results are recorded automatically.

Smart Start’s system is designed to reduce accidental violations. The handset fits comfortably in your hand, the display is easy to read in low-light conditions, and prompts are clear without being distracting.

Support is available 24/7. If you have any questions about the device or compliance, local Kiwi staff are available to help quickly. All Smart Start staff have lived experience (they’ve all had an interlock system installed in their vehicle). This means you’ll always be dealing with someone who truly understands the process, and this ongoing, expert support is critical to completing your alcohol interlock program smoothly.

The Transition Phase Many Licence Holders Miss

One of the most misunderstood steps comes after the interlock period ends. Completing 12 months with an interlock does not automatically qualify for your next licence (zero alcohol licence).

Once you’ve had your final interlock service, you must apply for your Zero Alcohol Licence. NZTA will review your data and, once they give you approval, you need to get your zero alcohol licence from a licensing agency. You must have your zero alcohol licence in hand before you can book your interlock removal. Your zero alcohol licence is held for three years. Please note that during this period, any alcohol detected while driving would have serious consequences.

Understanding this transition early helps avoid frustration and setbacks. Planning for licence changes ensures there is no gap where you are unable to drive legally.

Commonly Asked Questions About Alcohol Interlock Licences

What is an alcohol interlock sentence?

These kinds of sentences refer to the consequences of being convicted of alcohol-related driving offences, and a few stages are involved.

First off, you get a 28-day disqualification, where the NZTA will cancel the licence for this duration. Then you'll reach the alcohol interlock licence, which lasts 12 months, typically. And finally, you will reach the zero alcohol licence, which lasts three years.

Who receives alcohol interlock sentences?

If you have repeated drink driving offences, a court can issue an alcohol interlock sentence.

These sentences also apply to drivers who have a high breath or alcohol reading, with the breath reading exceeding 800 mcg/L and or the blood alcohol reading going above 160 mg/100mL.

What is permitted with an alcohol interlock licence?

This kind of licence means you'll only be able to drive a vehicle that has had an approved alcohol interlock device installed following the 28-day disqualification period.

And for the next 12 months, you will not be able to drive another type of vehicle, or you risk being charged with driving during disqualification.

Prepared to Get Your Smart Start Interlock Installed?

Here’s what you need to remember when getting a Smart Start interlock installed:

  • Getting an interlock is the only legal way to return to driving after an Alcohol Interlock Order
  • Costs include installation, monthly servicing, and removal, with a subsidy available for some
  • Choosing Smart Start’s authorised interlock installer network removes any risk of compliance issues
  • Using an interlock becomes routine due to Smart Start’s well-designed interlock device
  • It’s important you get your Zero Alcohol Licence BEFORE you remove your interlock

If you are ready to move forward with the interlock device fitting process, booking early helps prevent delays. Smart Start Interlocks offers NZTA-approved interlocks, nationwide service centres, voluntary interlock device installation in NZ, and local Kiwi support throughout the process. Book and prepare for your installation today and take the next step toward getting back on the road.

© 2026 Smart Start All Rights Reserved l Privacy Policy l Website Design by Virtual Innovation