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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The device will not power down after my vehicle is off and its has given me 1 violation for it it is installed in a 21 f150 and im about to get rid of it
Response from Guardian InterlockMay 18, 2026
We apologize for the difficulties you’ve experienced with your device. Our team will be following up to ensure this gets corrected promptly.
JO
Joseph O.
Horrible
Everything from customer service to technology to supervisor not calling back or following thru would never recommend this company
Response from Guardian InterlockMar 25, 2026
We regret to hear that your experience with our service staff was not a positive one. We understand how important respectful, helpful communication is, and we are taking your feedback seriously. We’ll be following up with you directly to learn more and make this right.
FG
Felicia G.
Terrible go ANYWHERE ELSE
Terrible. Do not use this company. I spoke to multiple representatives before I made any appointment, about the 0 installation and free month. That you wouldn’t pay anything down. They assured me multiple times this was the case, and I reiterated that, because I get paid a different day. I went to drop my car off, and went to pick it up after work. Waited an hour, for anyone to even show back up after I sat outside. Was then told I owed $115 for the labor. I was told by both, that they had negotiated and both agreed on what they had told me. After being there another hour and a half trying to figure it out, I ended up having to leave my car there, because I couldn’t pay the $115 until the next day, and they wouldn’t give it to me If I knew this, I would have scheduled accordingly. So yes, there are “hidden fees.” And this is an overall horrible first impression, not looking forward to having to deal with this for the foreseeable future. Go somewhere else
Response from Guardian InterlockMar 5, 2026
We’re so sorry your appointment wasn’t the smooth experience it should have been. We’ve shared your feedback with our field management team, and someone will be reaching out to make things right.
TC
timothy C.
Taken advantage of
I set up a date & time to have the equipment installed at service provider, 3505 E Saint Vrain, Colorado Springs, CO. 80909. When I called Guardian Interlock services at their 1-800 number to set my appointment, at no time was I asked about any breathing difficulties, asthma of any kind and/or problems blowing into the device to measure alcohol in my body. I went to my appointment, signed their documents, and had the device installed. I couldn't blow hard and long enough into the device to make it work properly because I do indeed have asthma and COPD. The tech, Patrick, stated I could have my doctor send a letter explaining my condition. While I was there, I called my doctor and he immediately sent over a letter noting my condition. The tech, Patrick, then stated he couldn't use it that there were forms that I needed to have filled out by the dmv etc. I was told that could take 30 days. While frustrating, I still understood and asked him to remove the equipment and that I would get the proper documents. He then told me there would be a $250 charge to take it out. Very frustrated now, I could not see why the charge. I understand shop labor, but it took him 30 minutes to install it and all of 10 minutes to take it out. Seems a bit high, don't you think. The reason I am soooo frustrated and dissatisfied with Guardian, it's service provider and the tech; is that no one ever brought to my attention before the appointment nor at the install, where there any breathing difficulties. I stated to the customer service representative that, that conversation should be had with the customer prior to installation of said equipment into my vehicle. I was told, I should have asked! When I brought up to the service provider, that there should be a mockup of the equipment at the facility to use to make sure there were no problems, i WAS TOLD AGAIN, ":YOU DIDN'T ASK" Had there been any prior conversation about the use of the equipment, I would have already had my documents in order at the time of the install. So pretty much I was told by 3 persons, it was my own fault, I should've asked. Piss poor customer service by Guardian Corporate and even more piss poor service by the installer. Appears that they can do whatever they want and treat the customer however they want because they know that they have you in the strangle hold. I'm a 60-year man, not a kid and I should have not be disrespected they way I was. No suggestions and/or help was provided; just told it was my fault. DON'T USE GUARDIAN, THERE'S MUCH BETTER COMPANIES OUT THERE!!!!!!
Response from Guardian InterlockFeb 23, 2026
We appreciate you sharing your experience. We're sorry to hear about the difficulties you faced regarding the interaction. Unfortunately, there are a lot of one-off variables that an interlock customer can face, and they can't all be addressed during enrollment. Not being able to provide a proper amount of air is rare but easily resolvable. Additionally, I see that we didn't collect any money. Someone from Guardian's leadership team will be in touch.
SC
SANDRA C.
They were rude charged me for…
They were rude charged me for installing . It drained my battery dead ,and I haven't been able to drive my truck. I can't breathe that hard because I have asthma.
Response from Guardian InterlockFeb 6, 2026
We know how important it is for an appointment to go smoothly, and we’re sorry we missed the mark. We’re working with our teams to make sure future visits are more positive. A Guardian team member will be in touch to assist you directly.
SC
scottconanthotmail.com
They suck
They suck. Always bill incorrectly. I was at the shop when they called saying all equipment turned in and end my service. Months later I get a bill for over $300...
Response from Guardian InterlockDec 23, 2025
Thank you for bringing this to our attention. Our team will be reviewing your account thoroughly and we will be reaching out to you to address this directly.
EM
Ervin M R.
Bad services
Bad services, prices are not what they said, a lot of hidden fees,
Response from Guardian InterlockDec 10, 2025
We know this isn’t an experience anyone chooses, and we’re sorry for the frustration. Our priority is to give you the support you need to get through your program successfully. All fees are listed in your original contract. A member of our executive management team is reviewing your account and will reach out to assist you in resolving this matter.
LH
Luke H.
This company provides privacy violations and is repugnant to the constitution of the United States. LMG Holdings inc.is a data broker and uses your GPS location in real time as well as using facial re
This company provides digital identity infrence data that includes Character disposition , habits , traits, ability, cognitive response and intelligence analysis , behavioral mental health and facial recignition recording that is kept with no notice UCC 1-308
Response from Guardian InterlockNov 3, 2025
Thank you for sharing your concerns. The settings on your device are set by state regulations, not by Guardian or the interlock industry. There is no face recognition on our products. Also, GPS is only recorded in states that require it; yours is not one of them, so we've never recorded GPS data for you. Rest assured that we're not using more advanced/expensive equipment than necessary.