Sunday, November 8, 2026 · Customer reviews of US businesses
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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 The Fair Hearing, with an average rating of 4.0 out of 5.
Showing 541 reviews with 5 stars · Clear filters
Tawanda is the person who handled my information and gave me the best quote. She was very professional and courteous throughout my delicate time of need.I would definitely recommend your services to anyone in the similar situation that I am in and hopefully they get Tawanda to help them she provides amazing outstanding services.
By SM
Rating our customer service over the phone, as we haven't had the interlock device installed yet. The representative that I spoke with for around a half hour, James "Brad" Minor, was BY FAR the BEST customer service representative that I've EVER had to deal with!!! Kind, courteous, attentive, patient, helpful, & I could go on & on. I NEVER write reviews, especially on this topic, & if I have it's been because my experience was so terrible. However, I wanted him to get recognition for his professional & interpersonal skills. Getting an interlock device installed in your vehicle isn't exactly something that brings people joy, but this company should take pride that they have someone so wonderful working for & representing them. Hands down THE BEST customer service I've EVER experienced & I thank him for that. If only they could all take pride in their job & try to make people's experiences enjoyable. Thank you, Brad!!!
By Taila W.
Carmen fué muy amable!
By Hugo
I have been working with Guardian for 3 years now, for the most part, I have really enjoyed working with Guardian. The technicians have always been kind and willing to accommodate my scheduling needs. Linda and Curt at the Tukwila, WA location were great! I would drive 45 minutes out of my way to get my car serviced because they were so great. When I was calling to schedule at the Woodinville, WA location (since the Tukwila location had closed) Brooke helped me with the scheduling and made the transition SO easy and simple. For needing to have an interlock system, I am glad that I started with Guardian Interlock, the device itself is not one that I am pleased to have, but the people are great to work with!
By Megan K.
Tawana was a great help really nice
By Leonardo
Twana was very helpful with what I needed and also explained everything very well to me.
By Conner
Thank you to Tawanna R for your caring and exceptional customer service. You are appreciated! A million times thank you! Tessa
By Tessa
Tawanda Rozier was very helpful. Very down to earth & provided me with everything that I needed. Thank you!
By Phillips
