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813 reviews
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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 Rated Honest, with an average rating of 4.0 out of 5.
Showing 148 reviews with 1 star · Clear filters
James J.
Posted
If I could do less stars I would. Horrible with communication and the instalation messed my car up and they won't reimburse me for money spent to find out it was their device that messed it up
Response from Guardian Interlock· Sep 22, 2025
We’re truly sorry to hear about your experience. This is not the standard of care we strive to provide. A member of our executive management team will be reaching out to you to assist in resolving this matter.
Unhappy
Posted
I scheduled the appointment with Guardian but when I arrived at the shop they had no record of my appointment and hadn't been sent the equipment. Guardian then tried to tell me I needed to take my car (which I'm not legally allowed to drive) to another shop. After refusing to do so, they agreed it would stay at the initial shop. I received no communication after that and had to call to request a status update. At that time, the shop tried to charge me for the installation which was advertised as free to get started. When I called Guardian to help resolve it, I got multiple different answers from more than one person. The first person actually told me, "no" when I asked them to stop interrupting me and let me speak. Poor communication and rude representatives who do not know how their service works and what is being advertised made this a horrible experience. To be clear - the fault is all on Guardian's end and not the shop's. Edited 7/25/2025 @ 2:48 PM Mountain - I received a response from Guardian that tried to place the blame on the shop, but also asked that I update my review. Well, here's the update - Asking me to change my review when you're at fault and the service and treatment from your agents is subpar is not helping your case. The review stands and it would be lower if I could give them 0 stars.
Response from Guardian Interlock· Jul 25, 2025
Thank you for taking the time to provide us with this feedback. We have escalated your concerns about our Guardian service location for our Field Management to look into, and someone from our executive management team will reach out to see how we can best assist you during this time.
PRUDANCE C.
Posted
This place set an appointment and the shop they set an appointment with canceled without letting me know. Now I have to start all over with another company
Response from Guardian Interlock· Jul 18, 2025
We apologize for the inconvenience you experienced at your installation appointment. Someone from the Guardian management team is looking into this and will be in contact with you to see how we can best assist you.
Oatah C.
Posted
It was a Friday and I had just left my appointment I had the 3rd device installed dye to the first 2 malfunctioning! I go into work for three hours and I go to blow and the bottom connector just cones right off wires and all! I told the lady that it looked loose which she said was fine! I rushed back up to the shop to get it fixed replaced or whatever and they are closed? It's 435pm sign says 5pm is closing time. I'm not rich and an barely scraping g by in life and an Uber just isn't an option so I don't turn the car off until Saturday. I called the number numerous times and all they could say was sorry. This is unacceptable they need som e one who can take care of This stuff in the off hours! I have to work I have a family to feed and to hear sorry is so irresponsible and ridiculous from company that is supposed to keep the roads safe! I pay $125+ for the service and I keep getting junk! Now the whole bottom half came off cmon now. So now I have to.pay a tow truck to get it there Monday plus I'm careless for.2 days! Guardian needs to do more were talking about a person's livelihood here Plus I ended up having to.miss work anyways for the cheap defective device they installed this time! Sounds like a lawsuit to.me.
Response from Guardian Interlock· Jun 24, 2025
We’re sorry to hear of your experience and would like the opportunity to investigate this further to see how we can help. Unfortunately, we are unable to identify your account, so we’ve sent you a private message (through Trustpilot) requesting more information. Upon your response, a Guardian management team member will reach out to see how we can best assist you.
Dennis L.
Posted
The local franchise is great - the issue is with the device programming / firmware. When the device was first installed in December, all was as anticipated. A few months in, I started receiving Errors Codes. The unit would display "Low Battery". I was concerned about parasitic draw from the Guardian System. I went to the local franchise and they replaced the handset. Two weeks ago, coming back form picking up fast food, and, apparently, now that it is warmer, the unit does not recognize that the car has started, (local franchise tech informed me of a threshold voltage being 13.8) So, I mistakenly assumed I had an alternator problem, Two trips to my auto mechanic to find out that the Mercedes running voltage specification is 13.5 volts, and they would not replace an alternator that was working properly. SO now I've spent almost $300 on a battery for this unit. The unit shut downs and reboots requesting a blow - goes to "Start Engine" and never gets to "Drive Safely" before cycling all over as if i just got in the car, a mile down the road. This process sometimes happens three or four times, before I get a "Drive Safely" Graphic. Then there's the other firmware issue - the device no longer 1) displays a box around the Pass Checkmark, 2) No longer chimes when switching to "Drive Safely" 3) Doesn't initiate the internal "knocker" if the radio / ambient noise is too loud and I don't hear the first "blow" chime for a rolling retest like it did in the first thirty days of use.
Response from Guardian Interlock· Jun 24, 2025
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 executive leadership team will be in touch to see how we can help.
NICHOLAS M.
Posted
Genuinely awful experience. From the installation through Guardian, to the customer service to making sure they are complying with the DMV. Absolutely no accountability. Guardian has been without a doubt, the worst part of the DUI process for me. I received different answers every single time I called looking for assistance.
Response from Guardian Interlock· Jun 5, 2025
Thanks for providing this feedback. We are looking into the issues presented here and a Guardian management team member will be in touch to see how we can make your experience better.
VINCE H.
Posted
Nothing at all
Response from Guardian Interlock· May 27, 2025
High-quality service and the satisfaction of our clients are of utmost importance to us at Guardian. We would like to find out more information regarding your concerns, so someone from management will be reaching out to you.
ELVER R.
Posted
Not good customer service after they receive payment
Response from Guardian Interlock· Apr 18, 2025
We appreciate your feedback and apologize for the lengthy hold times when reaching out to our Customer Support Center, your patience is appreciated. Please know that we now have an online chat option! Click the "CHAT WITH A SERVICE AGENT" button at https://www.guardianinterlock.com/support/contact-us/ to chat with a Service Specialist Mon - Fri 10:00 AM to 8:00 PM Eastern Time. We will have a Guardian Customer Support Expert contact you to see how we can best assist you during this time.
