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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Had the device for 3 months, never worked properly, had it removed.
Response from Guardian InterlockNov 4, 2020
We’re sorry to hear you experienced a difficult time with your Guardian device. Good luck to you in the future!
JW
James W.
This thing sucks
This thing sucks. It takes several times to try and often times me out. It take a long time for it to warm up. Just the crappiest piece of junk. You would think with modern technology there would be a better way.
Response from Guardian InterlockOct 29, 2020
We’re sorry to hear you have experienced a difficult time with your Guardian device. We want to make sure you are confident and feel safe when you are on the road. Someone from our team will be in touch shortly to see how we can help.
LS
Lewis S.
Scheduling an installation was easy and…
Scheduling an installation was easy and efficient. The staff at the installation site was courteous and quick. Special mention of Wayne at Mobile Concepts.
Response from Guardian InterlockOct 29, 2020
Thank you so much for acknowledging our Pueblo, CO shop. Our contractor partners are a huge asset to the Guardian brand. We will make sure to let them know they are doing a great job!
SS
Slimerpro S.
Handset Technical Issues
In the last 6 months I've had my handset replaced around 10 times. I've had it replaced twice over the last 2 weeks. This most recent time I ended up stranded over 2.5 hours from my house. I call Guardian and they can't offer any solutions. I'd pursue a solution if I was given one. I transport children and this is becoming scary and dangerous.
Response from Guardian InterlockOct 19, 2020
We’re sorry to hear of any hardships with your Guardian device. We want to be able to correct the issue for you, so you can get back up and running with confidence and peace of mind. We are looking into the issues presented here and will be in touch to see how we can make your experience better.
MB
Mark B.
Really good service
Really good service
Response from Guardian InterlockOct 15, 2020
Thanks for the thoughtful feedback! Guardian values our clients and we’re glad you felt that.
KC
Kendra C.
THIS COMPANY DESERVES NEGATIVE STARS!
If I could give this company negative stars I would. I have had this device for over a year now, and with constant device issues, I was willing to look past them because it never kept me from using my vehicle, although towing my car every other month was pretty inconvenient. However, for a week now I have not been able to drive me vehicle due to device issues. I towed my car to three different locations, and was promised a NEW device at every appointment. However, at the first appointment they did not even have a new device for me, or any replacement devices for that matter. At the second appointment I towed my vehicle to, after asking the agent to triple check that I would receive service, I towed my car there only to not even be on the schedule. On saturday I called and they told me that they were unable to schedule an appointment for me, but somehow when I called the shop they were magically able to set an appointment for me. However, I was given another ‘refurbished’ device that worked only to get me about 10 minutes away from my house before it stopped working completely. Each and every time I called the customer service line, I could not get a straight forward answer and that a ‘market manager’ would be reaching out to me, however I am unsure they even exist as I still have not received a call from them in about a week. On the website is specifically states that a replacement device will be issued within 24 hours so I am unsure why it has been a week with no working device. Not to mention I spoke with a Dineen McCoy who is apparently a supervisor, I simply asked for an email stating that this company could not provide me with a working device, to show my probation officer that this is in fact not my fault and that I would get some kind of answer today, but after saying that she would, she simply put in the email she she herself reached out to the market manager. With complete disregard to how something of this nature could send me back to jail. Not only have the customer service agents been unhelpful, they charged me $70 for a service that clearly has not worked, and offered me $50 ‘credit’ to their company as if that would suffice from 3 tows, and a week off work now that I have not had my device. I have recordings from the latter phone calls with this company and will be sending them to my lawyer, this company has definitely mishandled this situation in every way possible and is absolutely unacceptable.
Response from Guardian InterlockOct 15, 2020
Thanks for providing this feedback. We are sorry to hear that you are experiencing hardships with your interlock device. Your concerns have been escalated to our field management by our Guardian Customer Support leadership team and they are working to find a solution.
JD
Jenna D.
Not Recommended
At first, I thought Guardian deserved 5 stars. My initial call with them was very pleasant. However, after that the experience went south. They sent me to a shop that didn’t have my appointment, in a very bad part of my city, and could not actually install the device in my car (I have a Volvo). I went with another company after this experience.
Response from Guardian InterlockOct 13, 2020
Thank you for taking the time to provide us with this feedback. We have escalated your concerns about our Guardian service location for our Market Manager to look into.
DA
Daniel
Great job
Great job! Very helpful and quick.
Response from Guardian InterlockSep 30, 2020
We are so grateful for your kind words. Thanks for sharing your review with us and the Guardian community.