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.
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Showing 541 reviews with 5 stars · Clear filters
Joseph B.
Helpful honest staff, answered all my questions!
Response from Guardian InterlockSep 14, 2026
We truly appreciate you highlighting Kristina. Our team takes pride in providing excellent support, and it’s great to know their efforts stood out to you.
RAMON NAVARRO S.
The service
Response from Guardian InterlockAug 31, 2026
We’re so glad you had a great experience with Irene. At Guardian, we know that every interaction matters, and it’s wonderful to hear that their support made a difference for you.
AUSTIN S.
The representative assisting me was very polite and informative.
Response from Guardian InterlockAug 31, 2026
It’s great to hear that Blanca was able to assist you so well. Our team is dedicated to supporting our customers every step of the way, and your recognition reinforces the effort they put in every day.
Jose D.
Hello my experience was awesome and my friend Jose helped me out make my payment simple and easy and also answered my questions in the best and most professional way that I could understand in order to understand my balance. He is awesome thank you for your help, from Jose Delgadillo.
Response from Guardian InterlockAug 27, 2026
We really appreciate you taking the time to highlight Jose. Providing excellent customer support is a top priority, and it’s wonderful to know that they made a positive difference in your experience.
Brittany D.
Tawanda was amazing! She made the process over the phone effortless and had me set up with an appointment next day!
Response from Guardian InterlockAug 20, 2026
We’re thrilled to hear that Tawanda provided such great support! Recognizing our team members for their hard work is one of the best parts of what we do, and your feedback will absolutely be shared with them.
Lora M.
Dillon was awesome I was so nervous and full of anxiety, he was calm and helped me through it all he was very patient and polite the absolute best costumer service!! Thanks again😎
Response from Guardian InterlockJul 30, 2026
Thank you for sharing such kind words about Dylan. Exceptional service is what we strive for every day and knowing that your experience reflected that means a lot to us.
NOLAND G.
I encountered a false lock-out, and the technician provided a code so that I could get to the service center. When I got there, they fixed the situation, and there was no inconvenience charge. Thanks.
Response from Guardian InterlockJul 24, 2026
Thank you for sharing your experience with our Severna Park, MD shop. We are so pleased to hear that your visit went well, and we have forwarded your review to our regional management team so they can celebrate this success with the staff!
JOHN
The customer service is top notch. Very helpful. I can call anytime and they answer quickly. I thought the closest center to me was an hour and a half away when it turns out it’s around the corner. Thank you!
Response from Guardian InterlockJul 1, 2026
We’re so glad you had a great experience with Selene. At Guardian, we know that every interaction matters, and it’s wonderful to hear that their support made a difference for you.