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Johnathan MWhat is Underage DUI in South Carolina?
South Carolina enforces two overlapping laws that apply to drivers under 21.
The first is the Zero Tolerance Law, found at SC Code Section 56-1-286. If you’re under 21 and your blood alcohol concentration (BAC) is 0.02% or higher, your license is subject to automatic administrative suspension. This happens separately from any criminal charge. Often, just one drink can cross that 0.02% threshold.
The second is the standard DUI statute at SC Code Section 56-5-2930, which applies to everyone. If your BAC is 0.08% or higher, you face full criminal DUI charges, the same as an adult. South Carolina also prosecutes under SC Code Section 56-5-2933, the “per se” DUI law, which kicks in based on a measured BAC without requiring separate proof of impairment.
The key distinction: the Zero Tolerance Law at 0.02% is an administrative matter, while a BAC at or above 0.08% involves criminal DUI charges with jail time, fines, and a permanent record.
For a comprehensive view of DUI charges in South Carolina, visit the DUI Lawyer page.
Penalties for Underage DUI in Greenville, SC
Penalties depend on your BAC at the time of arrest.
BAC of 0.02% but less than 0.08% (Zero Tolerance violation only): – Three-month driver’s license suspension for a first offense – Enrollment in the Alcohol and Drug Safety Action Program (ADSAP) – No criminal conviction on your record from this administrative action alone
BAC of 0.08% but less than 0.10% (criminal DUI, first offense): – Fine of $400 or 48 hours to 30 days in jail – Six-month license suspension – Mandatory ADSAP completion before license reinstatement – Criminal record
BAC of 0.10% but less than 0.16% (criminal DUI, first offense): – Fine of $500 or 72 hours to 30 days in jail – Six-month license suspension
BAC of 0.16% or higher (criminal DUI, first offense): – Fine of $1,000 or 30 to 90 days in jail – Six-month license suspension
Refusing a breath or blood test triggers a six-month license suspension under South Carolina’s implied consent law (SC Code Section 56-5-2950), and that refusal can be used against you in court.
One critical factor many miss: you only have 30 days to request a hearing to contest an administrative license suspension. Miss that window and the suspension takes effect automatically.
South Carolina’s implied consent law means an officer must inform you of the consequences of refusal in writing using a standard SLED form. If the officer failed to deliver it correctly, the refusal suspension may be challenged at the hearing. These procedural requirements exist because the suspension is a severe consequence, and the state must follow the rules to impose it.
A first-offense criminal DUI may, in some cases, qualify for pre-trial intervention or conditional discharge, which can help keep the conviction off your record. However, fentanyl and drug-related charges are explicitly excluded from PTI. Eligibility for diversion depends on the specific facts and the Greenville County solicitor’s office. An experienced attorney can help you explore whether Expungement is possible after your case resolves.
How Underage DUI Cases Are Prosecuted in Greenville County
Greenville County cases are handled in the 13th Judicial Circuit. Magistrate court handles misdemeanor-level DUI cases, while General Sessions Court handles felony-level charges.
The prosecution will rely on the officer’s report, field sobriety test results, and the breath test or blood draw. South Carolina requires that DUI arrests be captured on video, and the State Law Enforcement Division (SLED) certified DataMaster is the standard breathalyzer used in Greenville.
The video requirement is significant. Officers must record the DUI investigation, and failure to do so can lead to dismissal of charges. Prosecutors in Greenville are aware of this, as are defense attorneys.
For underage defendants, the solicitor may also evaluate whether the circumstances warrant charging under the Zero Tolerance law alone versus a full criminal DUI. That distinction matters enormously for your future.
Defense Strategies for Underage DUI
Every case is different, but several defense approaches apply in underage DUI matters in South Carolina.
Challenging the traffic stop. The officer needs reasonable suspicion to pull you over. If the stop was pretextual or lacked a valid legal basis, everything that follows may be suppressible.
Attacking the field sobriety tests. These tests are notoriously unreliable, especially when administered improperly or under adverse conditions. A nervous teenager on the side of a Greenville highway at night is not performing a controlled test.
Challenging the breath test. The DataMaster machine must be properly maintained and calibrated. The officer administering the test must be certified. The 20-minute observation period must be followed. Any deviation from protocol can undermine the result.
Missing or deficient video. South Carolina law requires video recording of DUI investigations. If the video is missing, incomplete, or doesn’t capture required elements, dismissal may be possible.
Arguing the Zero Tolerance distinction. If your BAC was between 0.02% and 0.08%, you face an administrative action, not a criminal one. Fighting to keep this in the administrative lane prevents a criminal conviction.
Negotiating for a lesser charge. A reduction to a non-DUI traffic offense like reckless driving is possible, particularly for first-time offenders with BACs near the threshold.
Understanding how First Offense DUI cases are handled provides additional context to the defense options available.
Why You Need an Underage DUI Lawyer in Greenville
The consequences of an underage DUI extend far beyond fines and license suspension. Federal financial aid can be cut off for students with drug and alcohol convictions. Clemson University, Furman University, and other Greenville-area institutions have their own student conduct processes that run parallel to the criminal case. A criminal DUI charge, regardless of how it resolves in court, may trigger a separate disciplinary hearing that can result in suspension, probation, or a notation on your academic record. If you’re a student athlete, NCAA eligibility rules may also be implicated.
The ADSAP requirement adds another burden many people underestimate. Before your license can be reinstated after any DUI-related suspension, you must complete an ADSAP assessment and any recommended treatment program. ADSAP providers in Greenville include state-certified agencies, and costs can run several hundred dollars out of pocket. Factor that into the full picture of what a conviction actually costs. Professional licensing boards in nursing, law, education, and other fields ask about criminal history. A conviction that seems minor now can close doors you haven’t even approached yet.
The 30-day window to contest your administrative license suspension is unforgiving. If you miss it, the suspension goes into effect regardless of how your criminal case resolves. That alone is reason to speak with a lawyer immediately.
John Crangle is a criminal defense attorney in Greenville who handles DUI cases in Greenville County courts, including the 13th Judicial Circuit. Contact John Crangle to discuss your situation and understand what defenses may be available in your case.