What is an ignition interlock device?

An ignition interlock device is a breath-testing machine installed in a vehicle that requires the driver to provide a breath sample with a blood alcohol content (BAC) below a pre-set limit before the vehicle can be started.

What is the purpose of an ignition interlock device?

The main purpose of an ignition interlock device is to prevent individuals who have been convicted of drunk driving from operating a vehicle while under the influence of alcohol. It is a court-ordered requirement in many states as part of a drunk driving conviction.

How much does an ignition interlock device cost?

The cost of an ignition interlock device can vary depending on the state, provider, and specific features. However, Smart Start offers affordable and transparent pricing for their ignition interlock devices, with the option to get a quick and easy installation.

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Smart Start Ignition Interlock

$45.0M revenue • 300 employees • 2907 E Main St, Plainfield, IN, 46168, United States

Last Updated Oct 20, 2026

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Company Overview

Company Name

Smart Start Ignition Interlock

Address

2907 E Main St, Plainfield, IN, 46168, United States

Website

smartstartinc.com

Phone

(866) 754-0186

Approx. Annual Revenue

$45.0M

Employees

300

Established

1997

Google Reviews

5.0 (2 reviews)

Locations

366

About Smart Start Ignition Interlock

Smart Start is a company that provides affordable, simple, discreet, and reliable car breathalyzers for ignition interlock requirements. The company is headquartered in Rockdale, IL, United States, and has approximately 501 employees. Smart Start has helped over 1 million drivers with its ignition interlock device services.

Business Profile

Read from the Smart Start Ignition Interlock website on Oct 12, 2026. Hover an item to see the exact wording it came from.

How Smart Start Ignition Interlock works

Languages (besides English)

Spanish

About the website

Website quality (AI-assessed): 7/10 · Current copyright 2026; Complete service information

Recent changes

What changed on the Smart Start Ignition Interlock website and Google listing, as detected by Coldlytics on each visit.

Oct 10, 2026
Google reviews went from 1 to 2

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