Intoxalock Ignition Interlock

4.2
9 reviews

About

Car Inspection Station
Intoxalock is the no. 1 ignition interlock device brand in the U.S., and Intoxalock Ignition Interlock in Brentwood, TN is here to help you get back on the road after a DUI. Intoxalock has more locations than any other provider, and we can find an interlock installation location near you. We will help you understand TN interlock, or IID, laws and regulations. Our interlock installation locations are staffed with certified professionals who will install and service your car breathalyzers. For 30 years, Intoxalock has been a trusted interlock ignition device provider. Call now to talk to a TN expert.

Details

  • Credit cardAvailable
  • DebitAvailable
  • Onsite servicesAvailable

Location

Intoxalock Ignition Interlock
1724 Carothers Parkway, Brentwood, TN
37027, United States

Hours

Reviews

4.2
9 reviews
5 stars
7
4 stars
0
3 stars
0
2 stars
1
1 star
1
  • AD
    Antonio Dalton
    Oct 15, 2025
    5.0
    I had my car in service at the Brentwood location. Nick was friendly, respectful and most of all very helpful during my whole experience.,
  • AM
    Andy Massey
    Mar 10, 2025
    5.0
    The staff at Cartronics were extremely helpful and patient answering all my questions regarding compliance and went to my vehicle with me to give me instructions on how to perform a successful test. I really appreciated their efforts.
  • CB
    Chanel Breezy
    Mar 31, 2021
    1.0
    Didn’t take out the breathalyzer now having to pay over 3,000 for the device that’s in a car that got totaled out. I had the tow company take it to this location to have it taken out. The company told me they did and 4 years later I have to deal with Collections

Frequently Asked Questions About Intoxalock Ignition Interlock

How does an interlock device work?

An ignition interlock device (IID) is a small breathalyzer installed in your vehicle to prevent it from starting if alcohol is detected on your breath. Before driving, you'll blow into the device. If your breath alcohol concentration (BrAC) is below the programmed limit, the car starts. Periodic retests occur during your trip to ensure continued compliance. To read more on Intoxalock, you can read our ignition interlock device guide.

What is the cost of an ignition interlock device?

The installation of an ignition interlock device, often called a car breathalyzer, typically costs between $70 and $150. This one-time fee is paid at the start of your lease and covers the service center's labor to install the device in your vehicle. Payment is made directly to the service center at the time of installation. For more on cost breakdowns, you can read our cost of ignition interlock device guide.