Over 25 Locations Across Tennessee
All Smart Start Services are by Appointment Only
Interlock Xpress-Clarksville
Servicing Wednesdays 8am- 5pm
Interlock Xpress-Franklin
Servicing Tuesdays and Thursdays 8am-5pm
Interlock Xpress-Gallatin
Servicing Mondays and Thursdays 8am-5pm
Interlock Xpress-Murfreesboro
Servicing Mondays and Wednesdays 8am-5pm
Interlock Xpress-Nashville
Servicing Tuesdays 8am-5pm and Fridays 9am-2pm
Interlock Xpress-Lebanon
Smart Start of TN-Chattanooga
Servicing Monday-Friday, 8am-5pm
Smart Start of TN-Halls
Smart Start of TN-Knoxville
Smart Start of TN-Johnson City
Smart Start of TN-Bartlett
Smart Start of TN-Collierville
Smart Start of TN-Sevierville
Plaza Electronics
Customs Tint & Off Road
G-Man Services
Servicing Monday-Friday 8am-2pm, Saturday 8am-12pm
Audio Works
PDR Specialist
North Main Audio
Servicing Tuesday and Thursday, closed Wednesdays
Dennis Mitchell Automotive Center
Pro-Lube
Shaffer Muffler Shop
Hilltop Auto & Towing
Safe-N-Sound
Scottie Brown Auto
Lexington-Coming Soon!
Harriman-Coming Soon!
Soddy Daisy-Coming Soon!
J&J Complete Car Care
McMinnville-Coming Soon!
Shelbyville-Coming Soon!
Ripley-Coming Soon!
Covington-Coming Soon!
Morristown-Coming Soon!
New Johnsonville-Coming soon!
Ashland City-Coming Soon!
DUI Help is Here!
TN Law requires installation of a car breathalyzer for a minimum of 365 days to regain a valid TN Driver License. Smart Start is the leading Ignition Interlock installer in Tennessee. Ready to install your IID? We’re here to help you get back on the road!


Become a Smart Start Shop
Interested in installing and servicing ignition interlocks? We may be looking to add a shop in your area. Fill out the contact form and we’ll get back to you soon!