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Fast-Track Your Installation

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Or Call (800) 831-3299 Now!

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Ignition Interlock
in Mercedes, Texas

Ride with Smart Start
& get back on the road

The leading Ignition Interlock Program in Texas

Low-price, with no hidden fees

Fast installation with same-day available

24/7/365 Multilingual Customer Care

It only takes a moment to get your personalized quote.

Call Now! (800) 831-3299

Ignition Interlock in Mercedes: We're Always Here for You

From $1.99/Day* - No Long-Term Contracts

Bi-weekly payment options designed to fit your budget.

Ignition interlock Costs

3,000+ Locations - Same Day Install

Quick installs by skilled technicians at convenient U.S. locations.

Find a Location

Discreet, Easy-to-Use Devices

Reliable, hygienic devices with guided tests and easy English-Spanish switching.

Smart Start devices

24/7 Knowledgeable State Program Experts

Multilingual support trusted by over 1 million people, ready when you need us.

Talk to a program advisor

Ignition Interlock Locations in Mercedes, Texas

Ready to get your driving privilege back? Let’s get started with an installation for your motor vehicle that fits your schedule, at one of the convenient locations below.

Smart Start of Pharr

415 N Sugar Road
Ste 9
Pharr, TX 78577

View Store Information Schedule An Install
(956) 264-9421 Get Directions
45 Modern Sounds Auto Services

1910 Houston Blvd
South Houston, TX 77587

CLOSED – Opens at 9:00am

View Store Information Schedule An Install
(833) 404-3169 Get Directions
Perez Remodeling

6811 E St
Mercedes, TX 78570

CLOSED – Opens at 8:00am

View Store Information Schedule An Install
(903) 328-3002 Get Directions

Ignition Interlock in Texas is More Than a Device. It's a Program.

If you’re searching for a car breathalyzer after a DWI or DUI, we offer the best Ignition Interlock Device in Mercedes, Texas. We will help you successfully complete your car breathalyzer requirement with support from caring, compassionate specialists who understand everything you need to know about Ignition Interlock in Texas.

However, you’ll be getting more than just an Ignition Interlock Device. We’ll be with you right from the beginning with the services and support you need. The cheapest Ignition Interlock program in Mercedes, Texas, includes 24/7/365 Customer Care that makes your Ignition Interlock program as easy as possible.

Schedule an installation appointment now in Mercedes, Texas, or at any of our Texas service centers.

(800) 831-3299

The Most Discreet Ignition Interlock Devices in Mercedes, Texas

Smart Start’s car breathalyzers were designed to be court compliant while keeping the user’s needs in mind. We understand the desire for privacy during this difficult time, so our Ignition Interlock Device is small and discreet.

The black exterior allows you to conceal it easily in your motor vehicle, but size doesn’t dictate function! Our Ignition Interlock Device can read your alcohol-free test in less than one second, so you can get back on the road quickly.

The Best Customer Care

When you choose the cheapest Ignition Interlock Device, you’re choosing the 24/7 bilingual support of our Customer Care Center and the expertise of our local technician teams. Call (800) 831-3299 or complete the form at the top of this page to enlist Smart Start as your program partner. We’ll put the wheel back in your hands.

(800) 831-3299

Questions about Ignition Interlock Devices in Mercedes, Texas

How do I get my IID calibrated in Mercedes?

Calibration is required regularly to ensure your IID is working properly. In Mercedes, we offer convenient service appointments to calibrate your device. The frequency of calibration is defined by Texas regulations. Generally, every 30-90 days.

Can I get same-day Interlock Device installation in Mercedes?

Yes! Smart Start offers same-day installation appointments at many of our Mercedes-area locations, subject to availability. We understand the urgency of meeting program deadlines, so we work to accommodate your schedule and get you back on the road as quickly as possible.

Where can I get an Ignition Interlock Device installed in Mercedes, Texas?

Smart Start offers several convenient installation locations throughout Mercedes and the surrounding areas. Our local service centers are staffed by experienced technicians who provide fast, professional installations. To find a location near you, visit our location finder or call our 24/7 Customer Care team for assistance.

How much does an Ignition Interlock Device cost in Mercedes?

Smart Start offers affordable Ignition Interlock solutions in Mercedes. See our Interlock Device cost guide for Texas to learn more.

How does an Ignition Interlock Device work?

An Ignition Interlock Device (IID) prevents a vehicle from starting if it detects alcohol on the driver’s breath. The driver blows into the device, and if their breath alcohol content is below the programmed limit, the car will start. You’ll also have to complete periodic retests after starting your vehicle to ensure continued compliance. Learn more about how IIDs work with our complete guide.

What are Texas’s IID laws?

In Texas, an Ignition Interlock Device (IID) may be required after a DUI. See our complete guide for information on IID laws and more in Texas.

See What Everyone Says About Our Ignition Interlock

Excellent TrustScore Rating

February 4, 2026

"New to the whole process. Jessica took time to guide and explain the process thoroughly. The direct contact and available support definitely makes a difference. Much appreciated. "

Benjamin G.

United States

February 4, 2026

"Switched from Intoxalock to smart start. Huge difference. Intoxalock was like having a brick as a handheld, bad customer service from India, and it locks you out a lot and they charge you 75.00 a pop."

Jeremy Chapin.

United States

February 4, 2026

"The Smartstart representative I spoke with was extremely helpful and made the process very simple for me. Yeah!"

Kelly Kish.

United States

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