Guardian Interlock provides ignition interlock systems (also known as "blow and go" or "car breathalzyer" for people who need or want them after a DUI/DWI arrest. We provide high quality services and devices to make the process of installing and using an interlock as easy as possible.
Guardian Interlock (guardianinterlock.com) has 813 customer reviews on Five Star Index, with an average rating of 4.0 out of 5.
Also known as
guardianinterlock.com
Website
guardianinterlock.com
Category
Auto Parts & Wheels
Listed on Five Star Index
2026
About these reviews
Replies
The company replied to 49% of reviews.
Latest
Most recent review: October 2026.
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Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
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This is best company
Best price at market and great customer service and like service from Mechanic great service his name Steve
Very nice guy
Response from Guardian InterlockJan 2, 2020
Thank you for taking the time to share your experience with our Pacoima, CA Guardian shop. I have forwarded your review to our Management team in that area to recognize their outstanding service!
Please check out our money saving referral program if you know of others who need an ignition interlock. http://www.guardianinterlock.com/blog/save-money-on-your-ignition-interlock/
FT
Faith T.
The machine they hooked to the car…
The machine they hooked to the car reads differently and hangs up every time it says analazying.
Response from Guardian InterlockDec 27, 2019
Faith, thanks for sending your feedback. We'd like to go over the details you described in your review and alleviate your issues so you have the best Ignition Interlock program experience. Please contact us at 800-499-0994 to allow us to assist you. Thank you for choosing Guardian as your provider, and we hope to speak to you soon.
SA
Shane A.
Overall I'm happy with the outcome
Overall I'm happy with the outcome, happy with my purchase. I liked how the staff was not pushing or demanding and they answered all my questions. I would recommend a person to them.
Response from Guardian InterlockDec 19, 2019
We’re thrilled to hear that you have experienced the stellar service Guardian strives to provide all of our clients! We appreciate the time you took to leave this review.
Please check out our money saving referral program if you know of others who need an ignition interlock.
http://www.guardianinterlock.com/blog/save-money-on-your-ignition-interlock/
JC
Jeremy C.
The tech
The tech. definitely needs improvement (warm up time, false positive, etc.) But overall no real complaint 4 stars because everything works as well as expected, and the installer/ technician was really, helpful & professional
Response from Guardian InterlockDec 16, 2019
Thank you for the honest feedback, especially the great review for our Guardian Pueblo, CO technician. I have forwarded your review to our Management team in that area to recognize their outstanding service!
Unfortunately, our devices' settings are dictated by state regulations, so the fail readings on our devices are outside our control. Please note that the ignition interlock device will register any trace of alcohol from any source containing it - this is how the device effectively ensures an impaired individual is not able to start a vehicle, and how we are able to confidently state the Guardian ignition interlock is fulfilling its purpose. We advise in our training manuals, training videos, and in person when our clients install the device - to be mindful of testing right after eating, drinking, using mouthwash, etc., as doing this can potentially register a fail and will require the device to be reset.
Please check out our money saving referral program if you know of others who need an ignition interlock.
http://www.guardianinterlock.com/blog/save-money-on-your-ignition-interlock/
ME
Megan
My appointment had to be rescheduled
My appointment had to be rescheduled. The technician was never informed (apparently) what type of vehicle I drive. The device was never installed. The technician had my car from 930am-230pm. I couldn’t drive for a week until my next new rescheduled appointment at a different shop.
This has been a waste of my time
Response from Guardian InterlockDec 12, 2019
We apologize for the inconvenience you experienced at your original installation appointment and since. It does appear that a Guardian supervisor has looked into your situation and we hope the addition of a credit helps to regain your trust.
HA
Hugo A.
Accommodate
I don't agree with their method of payment, I had to go out of my way to accommodate them when it should be the other way around. I mean, who doesn't accept cash are you kidding me!🤦
Response from Guardian InterlockDec 11, 2019
Guardian has 100s of service centers across the country for your convenience, which means it makes the most sense for our shop to only use one credit card system to ensure our field partners are also getting paid for their service as quickly as possible. We appreciate the feedback and will work hard in the future to help change your mind.
DC
David C.
Worse customer service ever
When starting up my car leaving from a long day of work. Notice device was stuck on warm up. Waited an hr in the parking lot and on hold at the same time. Then boom out of no where I'm asked to leave a message had to walk home phone died. Worse of the worse. Never again
Response from Guardian InterlockDec 10, 2019
I'm very sorry to hear of your experiences with our Customer Service team as well as hardships with your interlock device. Someone from the Guardian management team is looking into this and will be in contact with you shortly to see how we can help you through this difficult time.
MA
Marcus
Stupid machine
Everytime I’m driving it resets and I have to blow in the Machine again. Plus when it says start ignition the interlock system will not allow my truck to start! Even when it says I passed. The most stupid thing on the planet...
Response from Guardian InterlockDec 10, 2019
We’re sorry to hear you have experienced a difficult time with your device. We want to make sure you are confident and feel safe when you are on the road. Someone from the Guardian Executive Management team will be in touch shortly to see how we can help.
