Underage DUI in Tennessee: Zero Tolerance Laws and Defense Options

Posted: January 06, 2026

An underage drinking while under the influence (DUI) conviction can have long-term effects on college admissions, scholarships, job opportunities, and military eligibility. At Andrew C. Beasley, PLLC, our trial-tested Nashville DUI defense attorneys fight to protect young clients from the life-altering consequences of underage DUI convictions.

Tennessee Underage DUI (Zero Tolerance Law)

Tennessee enforces a zero-tolerance rule for drivers under 21. Underage drivers violate the law at just 0.02% or higher, meaning even one drink can result in charges.

Penalties for Underage DUI in Tennessee

Tennessee Code Annotated § 55-10-415 sets this strict standard and defines the penalties for violations of the zero-tolerance law. Convictions for underage DUI carry severe penalties that extend well beyond typical traffic violations. The consequences escalate with subsequent offenses and can include:

One-year suspension of driving privileges for first-time offenders.
Monetary penalties range from $250 to over $1,000, depending on circumstances.
Mandatory completion of public service hours assigned by the court.
Required attendance at substance abuse classes or treatment programs.
Installation of a breath testing device (ignition interlock) on your vehicle at your expense.
Potential incarceration, particularly for repeat offenses or aggravating factors.
A criminal conviction that appears on background checks for years.

Defense Options for Underage DUI Charges in Nashville, TN

Several defense strategies may apply to underage DUI cases depending on the specific circumstances of your arrest. Our experienced DUI defense attorneys evaluate the evidence and identify the approaches most likely to succeed in your situation.

Challenging the Stop

Police officers must have reasonable suspicion to initiate a traffic stop. If the officer lacked a valid justification for pulling you over, any evidence obtained during the stop may be inadmissible. We scrutinize the stated reasons for stops and challenges to pretextual or unconstitutional detentions.

Procedural Errors

Law enforcement must follow specific protocols when conducting DUI investigations and arrests. Grounds to suppress evidence or dismiss charges include:

Failure to read Miranda warnings
Improper administration of field sobriety tests
Violations of your rights during questioning

Testing Errors

certified personnel to produce reliable results. Our criminal defense lawyers review maintenance logs, operator qualifications, and testing procedures to uncover errors that can call BAC readings into question.

Diversion Programs

First-time offenders may qualify for diversion programs that result in dismissed charges upon successful completion. These programs involve education, community service, and probation, which keep convictions off your permanent record.

Reducing Charges

When dismissal proves unlikely, negotiating reduced charges can minimize the long-term impact on your future. We work to secure outcomes that preserve educational and career opportunities whenever possible.

Consult an Experienced Nashville DUI Defense Attorney Today

An underage DUI charge demands immediate attention from an attorney who understands how to defend young clients effectively. Your future opportunities depend on the outcome of this case. Contact Andrew C. Beasley, PLLC, at 615-846-9889 to schedule your free consultation with an award-winning DUI defense lawyer in Nashville, TN. We are available to take your call 24/7.