Missouri has a zero-tolerance policy for underage drinking and driving. A driver under 21 can face license suspension with a BAC as low as 0.02 percent — a single drink. At 0.08 or above, the full criminal DWI charge applies. The consequences extend well beyond a fine: criminal records affect college admissions, scholarships, employment, and professional licensing for years.
Bur Oak Legal defends underage DWI charges in Boone County and throughout central Missouri. If your son or daughter was charged, call for a free consultation to understand your options before making any decisions.
(573) 499-0200Missouri operates under a zero-tolerance policy for underage drinking and driving. Under Chapter 577 RSMo, a driver under 21 who registers a BAC of 0.02 percent or higher during a traffic stop faces an automatic license suspension — even if they show no visible signs of impairment and even if they have not committed any other traffic violation.
The 0.02 threshold is intentionally low. It reflects the legislature's intent to make any amount of alcohol detectable in an underage driver a punishable offense. A single standard drink can push most people over 0.02. This is a strict liability standard — there is no defense that the person was "fine to drive."
An underage DWI arrest triggers two separate proceedings that run simultaneously:
The zero-tolerance law is a separate, lower-threshold offense. If the driver under 21 registers a BAC of 0.08 percent or more — the adult standard — they can also be charged with a full DWI under § 577.010 RSMo. This is a criminal charge, not just an administrative action, and it carries criminal penalties including potential jail time, fines, and a criminal record.
Both the zero-tolerance charge and the full DWI can apply in the same arrest. An attorney reviews which charges were actually filed and builds a defense strategy accordingly.
For many young people in central Missouri — MU students, high school seniors, young workers — an underage DWI feels like one bad decision. But the consequences can follow them for years. Understanding the full picture is the first step toward protecting a young person's future.
Most colleges and universities ask about criminal convictions on applications. An underage DWI conviction can affect admission decisions, scholarship eligibility, and on-campus housing — particularly at schools with conduct policies that extend to off-campus behavior.
A criminal conviction for DWI appears on most standard background checks. Many employers in law enforcement, healthcare, education, finance, and transportation run background checks before hiring. A conviction at 19 can affect job opportunities at 25 or 30.
Nursing, law, teaching, social work, real estate, and dozens of other licensed professions in Missouri require applicants to disclose criminal history. A DWI conviction can complicate or delay the licensing process — even if it was years ago.
A license suspension means inability to drive — affecting work, school, and daily life. When the license is restored, auto insurance premiums increase substantially, sometimes doubling or tripling for years after a DWI conviction.
| Offense | BAC Level | Criminal Charge | License Action |
|---|---|---|---|
| Zero Tolerance (first offense) | 0.02–0.079% | Administrative only (no criminal conviction) | 30-day suspension |
| Zero Tolerance — refused test | Refusal | Administrative only | 90-day suspension |
| Full DWI (Class B misdemeanor) | 0.08%+ | Up to 6 months jail + fines | 90-day suspension minimum |
| Repeat underage offense | 0.02%+ | Enhanced penalties apply | 1-year revocation |
Underage DWI cases are not automatic convictions. The prosecution must prove that the person was operating a vehicle and that the BAC reading was accurately obtained under proper conditions. Chris reviews every element of the case — from the reason for the traffic stop to how the breath or blood sample was collected.
In some underage cases, the goal is dismissal or reduction of the charges. In others, it may be possible to negotiate an outcome that avoids a permanent criminal conviction — preserving the young person's record for future college applications, employment, and licensing. Chris explains the realistic options honestly at the outset, so families can make informed decisions.
When you work with Bur Oak Legal, your case stays with Chris Miller from the first call through final resolution. No associates handle your son or daughter's case while Chris works on other matters. You have direct access to your attorney throughout — for court appearances in Columbia and across central Missouri.
When a police officer arrests a driver under 21 for driving while intoxicated, the process moves quickly on two fronts. Within hours of the arrest, Missouri's implied consent law kicks in — any driver operating a vehicle on Missouri roads is deemed to have consented to a breath or blood test. If the driver refuses the breathalyzer test or blood test, Missouri imposes an automatic 90-day license suspension under the implied consent statute, and the refusal itself can be used as evidence in court.
At the traffic stop, a police officer typically conducts field sobriety tests before requesting a chemical test. These include the walk-and-turn, one-leg stand, and horizontal gaze nystagmus. The results of these tests can be challenged — errors in how an officer administers a field sobriety test, or failure to establish probable cause for the initial stop, can provide the basis for suppressing evidence in the case. If evidence is suppressed, the prosecutor's case weakens substantially or may collapse entirely.
An experienced DWI lawyer examines every step of the arrest and testing process. Key defense strategies in underage DWI cases include challenging whether the officer had probable cause for the traffic stop, whether field sobriety tests were properly administered, whether the breathalyzer test was calibrated correctly, and whether blood alcohol content testing followed Missouri protocols. In cases involving impaired driving allegations, an attorney may also investigate whether any medical condition or medication could have affected the test result.
For first DWI and first-time offenders, Missouri courts sometimes offer alternatives to conviction — including diversion programs, SIS (suspended imposition of sentence), or reduced charges. An experienced DWI attorney knows which prosecutors and judges in mid Missouri and Boone County are open to negotiated outcomes that protect young people's records.
After an underage DWI in Missouri, regaining driving privileges requires navigating both the administrative hearing process and any court-ordered requirements. Depending on the length of the suspension or revocation, a driver may need to file for an administrative hearing within 15 days of arrest, complete an alcohol education program, pay reinstatement fees, and in some cases install an ignition interlock device before full driving privileges are restored.
An ignition interlock device is a breathalyzer installed in the vehicle that prevents the engine from starting if alcohol is detected. Missouri courts and the Department of Revenue can require ignition interlock as a condition of license reinstatement, particularly for DWI convictions involving elevated BAC or repeat offenses. Understanding the reinstatement process from the outset — including the timeline and requirements — helps families plan ahead during a difficult time.
Many people use "DUI" (driving under the influence) and "DWI" (driving while intoxicated) interchangeably, but Missouri law uses the term DWI. A DWI charge in Missouri covers impairment by alcohol, drugs, or any controlled substance. DUI charges are the same offense described under different terminology. If your son or daughter is facing a DWI in Columbia or elsewhere in central Missouri, the outcome depends on how the charge is classified, the driver's age, their BAC level, and the strength of the legal defense. A first offense DWI handled correctly can sometimes result in outcomes that protect the accused from the most serious long-term legal repercussions.
The serious consequences of a DWI in Columbia, MO extend beyond the courtroom. A young person intoxicated at the time of the traffic stop faces not just criminal charges but administrative action, potential jail time, fines, and a license suspension period that disrupts their daily life. Getting enough evidence suppressed — or negotiating reduced charges — can make all the difference in how the case resolves. DWI lawyers in mid Missouri with courtroom experience in Boone County know how prosecutors evaluate these cases and what arguments are most effective for first time offenders.
Second DWI offenses carry enhanced penalties and are treated far more seriously by courts and the Department of Revenue alike. A second DWI within 5 years can result in mandatory minimum jail time, longer suspension periods, ignition interlock requirements, and steeper fines. For any DWI case in Columbia — first offense or repeat — the earlier an experienced DWI attorney is involved, the more legal options remain available. The best outcome in a DWI case usually depends on acting quickly and engaging legal assistance before any hearings or plea discussions begin.
Missouri has a zero-tolerance policy for underage drinking and driving. Under § 577.500 RSMo, a driver under 21 who registers a BAC of 0.02 percent or higher can have their license suspended — even if they show no signs of impairment. This is far lower than the 0.08 percent limit that applies to adult drivers.
Yes. If a driver under 21 registers a BAC of 0.08 percent or more, they can be charged with a standard DWI under § 577.010 RSMo — the same charge that applies to adults. The zero-tolerance law (§ 577.500) is a separate, lower-threshold offense that results in license action without necessarily triggering a criminal conviction.
It depends on how the case is handled. A conviction for a standard DWI creates a permanent criminal record. Some underage drinking violations are administrative rather than criminal. Missouri's expungement law under § 610.140 RSMo allows certain offenses to be expunged after a waiting period. An attorney can evaluate how the charge was filed and what options exist to minimize the long-term record impact.
Possibly. Some federal financial aid programs and private scholarships ask about criminal convictions. A DWI conviction — as opposed to an administrative license action — is a criminal matter that may need to be reported. The stakes go beyond just the legal penalties, which is why it is worth fighting the charge aggressively from the start.
Under Missouri's zero-tolerance law, a minor who fails a breath test (0.02 or above) faces a 30-day license suspension. Refusing the test results in a 90-day suspension. For a standard DWI charge at 0.08 or above, the suspension is longer and follows the adult DWI schedule. A hearing can be requested within 15 days of the arrest to contest the administrative suspension.
Yes. The consequences of an underage DWI — criminal record, license loss, impact on college admissions, scholarships, and future employment — are serious enough that having an attorney fight for the best possible outcome is worth it. An experienced DWI defense attorney can often negotiate reduced charges, challenge evidence, or pursue outcomes that limit the long-term damage.
Call for a free consultation. One mistake should not define a young person's future. Chris Miller defends underage DWI charges across central Missouri.