Choosing an interlock doesn’t have to be stressful. Smart Start Interlocks provides quick installation, friendly support, and clear guidance so you can meet your interlock licence requirements with confidence. As New Zealand’s most popular interlock provider, we help you understand the interlock programme, avoid violations, and stay on the road safely.
Call our team to get set up within minutes.
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Smart Start Interlocks is 100 percent Kiwi owned and has supported drivers since 2005. With over 10,000 installations completed, we understand the concerns many people have about interlock devices, including cost, ease of use, privacy, and reliability. Our team offers calm, friendly guidance at every step.

An alcohol interlock device is a small breathalyser connected to your vehicle’s ignition. You provide an alcohol free breath sample before starting the engine. The interlock system may request random tests while driving to confirm ongoing sobriety. All results are recorded for the NZTA as part of your interlock licence conditions.
Our Kiwi support team is here from 7am to 5pm to help you understand your interlock device, prevent violations, and stay compliant. Whether you are unsure about morning after readings, multiple drivers, or servicing, we provide clear, pressure-free advice.
Contact us for friendly help with any part of the interlock programme.

Smart Start users describe the process as effortless, supportive, and reassuring during a stressful time. We've installed over 10,000 interlocks in the last decade with many clients describing how our team made the entire interlock system simple to understand and quick to complete.
An alcohol interlock is a breath testing device connected to your vehicle that prevents the engine from starting if alcohol is detected.
You take a breath test before driving and during random prompts. All activity is recorded for NZTA review.
Costs depend on subsidy eligibility, monthly lease fees, installation, and removal.
Most installations take about an hour and can usually be booked within one to two days.
No. The vehicle will only start once you provide an alcohol free sample.
Removal only occurs when the NZTA confirms programme completion.
Each driver must provide their own breath sample. All activity is logged.
The NZTA reviews monthly reports through the approved service centres.
The device is small, discreet, and similar in size to a handheld breathalyser.
A breathalyser checks your level, while an interlock device controls vehicle ignition and records data for compliance.



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