Guardian Interlock: states, cost and reviews
31 of 50 states, shaded on the map; tap one for its rules and the other companies there.
Guardian Interlock at a glance
- States with install locations
- 31 of 50 states location list
- Advertised price
- $50 to $120 a month price page
- Installation
- $70 to $170 typical elsewhere: $70 to $150, per MADD
- Trustpilot
- 3.7 of 5 828 reviews on Trustpilot
We answer this number, not Guardian Interlock: the call books your install with a company that works in your state. About us
Other fees and offers
- $50 to $120 monthly, plus $70 to $170 to install (price page)
- Free installation, $0 due for the first payment and no sign-up fee (source)
What reviewers say about Guardian Interlock
Recent reviews, as summarized by Trustpilot, often mention staff who are polite and patient and who make the setup easy to follow. The company has answered 100% of the negative reviews posted there.
Living with a Guardian Interlock device
- Calibration visits every 30 to 90 days, as your state sets it. What the visits add to the bill
- Retests while you drive and what a failed test sets off: failed tests and violations
- When the device can come out and how removal works: getting it removed
How does Guardian Interlock compare with other providers?
| Company | Listed price | States | Trustpilot |
|---|---|---|---|
| Guardian Interlock | $50 to $120 a month | 31 | 3.7 of 5828 reviews |
 Smart Start | From $59.99 a month | 48plus DC | 4.6 of 543,627 reviews |
 Intoxalock | From $54.99 a month | 48 | 4.4 of 580,912 reviews |
 LifeSafer | $50 to $120 a month | 47 | 4.6 of 520,439 reviews |
States where Guardian Interlock installs
31 of 50 states, shaded on the map; tap one for its rules and the other companies there.
- Guardian Interlock installs here
- No install location