Brand Certified
RoadGuard Ignition Interlock
4.9(384 reviews)
Certified by RoadGuard Ignition Interlock • Feb 22, 2026
Business Details
249 Wolfner Dr., Fenton, MO
63026, United States
Certified by RoadGuard Ignition Interlock • Feb 22, 2026
(833) 611-1629
Certified by RoadGuard Ignition Interlock • Feb 22, 2026
https://roadguardinterlock.com/locations/missouri/ignition-interlock-missouri-fenton-249-wolfner-dr-63026/?utm_source=ExtNet&utm_medium=yext
Certified by RoadGuard Ignition Interlock • Feb 22, 2026
About
Certified by RoadGuard Ignition Interlock • Feb 22, 2026
Safety Equipment Supplier
Fast. Easy. Discreet. RoadGuard Interlock gets you back on the road with a car breathalyzer that is FAST to warm up, EASY to use, and DISCREET so you can focus on the road ahead. As an approved Missouri Ignition Interlock provider, we have convenient ignition interlock installation near you in Fenton, Missouri at 249 Wolfner Dr. With a proven track record, RoadGuard Interlock offers top-tier ignition interlock devices that won't damage your vehicle, professional installation, and reliable customer service. Call us today to schedule an appointment for your car breathalyzer installation, calibration, or removal in Fenton or any of our other convenient locations throughout the state of Missouri
Details
- Credit cardAvailable
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Location
Certified by RoadGuard Ignition Interlock • Feb 22, 2026
Hours
Certified by RoadGuard Ignition Interlock • Feb 22, 2026
Reviews
4.9
384 reviews
5 stars
373
4 stars
7
3 stars1
2 stars0
1 star3
What are people saying?
AI-generated from recent customer reviews
Customer Service
Customers consistently praised the professionalism, friendliness, and helpfulness of the staff, particularly Joe and Bob.
Efficiency
Many reviews highlighted the quick service and minimal wait times for appointments, making the process easier for customers.
Affordability
The business was noted for its competitive pricing and free installation, making it a cost-effective choice for interlock services.
Positive Experience
Despite the challenging circumstances of needing an interlock device, customers reported that the staff made the experience as pleasant and stress-free as possible.
- JJJacquieMay 22, 20195.0Joe is awesome! Made the experience painless, smooth, and easy! Very helpful with all my questions. Wouldn’t go anywhere else!!!
- IHIsmet HuremovicOct 24, 20185.0Bob and joe down here in Fenton are great. Not only do they always answer the phone and do their best to answer every question but they also work around everyone’s schedule when it comes to appointments. They have personally stayed late after hours for my service appointments on couple of occasions. Their hard work is very much appreciated and I thank them for it!!
- JEJohn ErpOct 19, 20185.0Joe and Bob are the best. Very professional, very friendly, and great at what they do. Downloads are fast and convienent, and they are always willing to help you reschedule an appointment when you need too.
- JKJustin KuesterSep 5, 20181.0Absolutely terrible . When you have your car serviced in any way through a mechanic or body shop they will not give the business the codes to move the vehicle. This means that you have to go by and move it for them . Your car may have to be moved 13 times during a repair. It's not an inconvenience for them for sure and that's what they'll blatantly tell you . They were rude and careless through every situation I presented. You are already dealing with Johnny Law and all the hoops and shame that comes with it .I personally wouldn't do business with these people if they were reaching into the black pits of hell to give you a hand out .
Frequently Asked Questions About RoadGuard Ignition Interlock
How does an interlock device work?
When you start your vehicle, you have to blow into a mouthpiece that’s connected to the ignition interlock device, sometimes called an in-car breathalyzer. The interlock device will then measure your breath alcohol concentration (BrAC) and automatically determine whether your BrAC is low enough to allow the car to start. Any test you take, whether pass or fail, will be reported to your monitoring authority.
How much does an ignition interlock device cost?
Ignition interlock device costs vary because each state has different pricing regulations and device technology requirements. But in general, you can expect to pay between $50 and $150 to install the interlock device depending on vehicle type. After the initial interlock installation, you are required to pay a monthly rental or lease fee. On average, the cost to rent or lease an interlock device is between $50 and $150 per month. Call us at 1-833-545-0368 for pricing in your area.
Do you have any offers or current deals?
We are currently offering your first month free. Give us a call at 833-545-0368 to learn more, or visit us at roadguardinterlock.com
How does the ignition interlock device work at RoadGuard Ignition Interlock?
You need to blow into the mouthpiece connected to the ignition interlock device, which measures your breath alcohol concentration (BrAC) and decides if your vehicle can start. All test results are reported to your monitoring authority.
What are the installation hours for RoadGuard Ignition Interlock in Fenton, MO?
The business is open Monday to Friday from 7:00 AM to 6:00 PM and is closed on Saturdays and Sundays.
Where is RoadGuard Ignition Interlock located?
RoadGuard Ignition Interlock is located at 249 Wolfner Dr., Fenton, MO 63026, USA.
Are there any current offers at RoadGuard Ignition Interlock?
Yes, they offer your first month free. Contact them at 833-545-0368 for details.
How much does it cost to install an ignition interlock device at this location?
Installation costs vary by state and vehicle type but generally range from $50 to $150. Monthly rental fees also apply, typically between $50 and $150. Call 1-833-545-0368 for local pricing.
Can I find other ignition interlock providers near RoadGuard Ignition Interlock in Fenton?
Yes, nearby providers include Smart Start Ignition Interlock and LifeSafer Ignition Interlock, which can provide alternative options for installation and service.
What nearby services can I visit around RoadGuard Ignition Interlock for vehicle-related needs?
Near RoadGuard Ignition Interlock, you can visit Bi-State Rubber Inc for industrial equipment or automotive supplies and Low Cost Ignition Interlock for affordable interlock device solutions.
Are there any nearby amenities or services useful for customers at RoadGuard Ignition Interlock in Fenton?
Yes, customers can visit Infinium Pharmacy for health needs or Cardinal Blinds & Shutters for home goods, both located close by for convenience before or after appointments.
What safety and professional services are available near RoadGuard Ignition Interlock?
Nearby professional services include T-Plex Industries for medical supplies, Peak Business Equipment Inc for business supplies, and World Press Printing for printing services.
How can I contact RoadGuard Ignition Interlock for more information or to schedule an appointment?
You can call them at +1 833-611-1629, email infodui@draegerusinterlock.com, or visit their website at https://roadguardinterlock.com/locations/missouri/ignition-interlock-missouri-fenton-249-wolfner-dr-63026/
Brand Certified Facts from RoadGuard Ignition Interlock
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Certified February 22, 2026Yext Knowledge Graph
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