Extreme DUI Attorney in Miami

Former Miami-Dade Prosecutor Defending BAC .15 Charges

A breath or blood test result at .15 or higher doesn’t just mean a DUI charge. Under Florida Statute Section 316.193, it triggers a separate, more severe sentencing tier with higher fines, longer jail exposure, and mandatory ignition interlock requirements that don’t apply at the standard threshold. Attorney Eric M. Matheny spent years as an Assistant State Attorney at the Miami-Dade State Attorney’s Office, the same office handling your case. He knows how that office evaluates breath test evidence and makes decisions on extreme DUI charges, and he left in 2009 to put that knowledge to work for the accused.

If you’ve been arrested for DUI with a BAC of .15 or higher in Miami-Dade County, contact The Law Offices of Eric M. Matheny, P.A. now at (305) 504-6655. We offer free case evaluations, payment plans, and 24/7 availability for new clients.

What Florida Law Actually Says About the .15 Threshold

“Extreme DUI” is a commonly used term, not a separate statutory charge name. What the statute actually does is impose enhanced penalties when a driver’s blood or breath alcohol concentration (BAC) reaches .15 or above. Standard DUI in Florida begins at .08. The .15 threshold creates a distinct sentencing tier under Section 316.193, and it applies starting with a first offense. No prior conviction is required for the elevated consequences to kick in.

The enhancement also affects what the court can do with your case. Florida Statute Section 316.656 prohibits courts from withholding adjudication and from reducing a DUI charge when the recorded BAC was .15 or greater, unless the prosecutor and court enter a formal stipulation agreeing the BAC was below that level. That restriction eliminates plea options available in a standard DUI and makes the defense strategy for these cases substantially different.

Enhanced Penalties Under Florida’s .15 BAC Tier

The penalty increases at each stage of conviction are significant:

First Conviction with BAC .15 or Higher
Fine of $1,000 to $2,000 (double the standard range), imprisonment up to 9 months (vs. 6 months at standard DUI), and mandatory ignition interlock device (IID) installation for at least 6 months. A standard first DUI doesn’t carry a mandatory IID requirement.

Second Conviction with BAC .15 or Higher
Fine of $2,000 to $4,000, imprisonment up to 12 months, and mandatory IID for at least 24 months.

Third Conviction Within 10 Years
Fine of at least $4,000 and potential prosecution as a third-degree felony carrying up to 5 years in prison.

Additional consequences apply across all tiers. Vehicle impoundment is mandatory: 10 days for a first offense, 30 days for a second, and 90 days for a third. License revocation starts at a minimum of 6 months to 1 year for a first offense and escalates to 5-year, 10-year, or permanent revocation for repeat offenses. Florida also requires FR-44 insurance following a DUI conviction, which carries higher liability limits than standard SR-22 coverage.

A DUI conviction in Florida results in a permanent entry on your criminal and driving record. Florida law doesn’t permit DUI convictions to be sealed or expunged. For non-citizens, a conviction can carry immigration consequences beyond the criminal penalties.

Defense Strategies for BAC .15 Cases in Miami

When the state’s entire enhanced-penalty case rests on a breath or blood test result, the quality of that evidence matters enormously. We review calibration and maintenance records for the specific device used in your case. Breath testing equipment must meet strict maintenance requirements, and gaps or irregularities in those records can affect whether the result is admissible or how much weight it carries.

The Two-Reading Variance

Florida DUI breath tests typically produce two readings. Where one falls below .15 and the other above, a Florida appellate court held in Department of Highway Safety and Motor Vehicles v. Colling, 178 So. 3d 2 (Fla. 5th DCA 2014), that the state may not meet its burden for the enhanced penalty threshold. That principle can be directly relevant to whether the elevated sentencing tier applies in your case.

Suppression & Stipulation

A successful motion to suppress the breath or blood test result removes the primary evidence supporting the .15 enhancement. Where suppression isn’t the path, a prosecutor may agree to a stipulation that the BAC was below .15 for sentencing purposes, which the court must formalize in a signed order, eliminating the mandatory enhanced penalties. We also evaluate the legality of the initial traffic stop, field sobriety test administration, and any constitutional violations in the arrest process.

The 10-Day DHSMV Deadline

Separate from the criminal case, you have 10 days from the date of arrest to request a formal review hearing with the Florida Department of Highway Safety and Motor Vehicles (DHSMV) to challenge the administrative license suspension. Missing that window means losing the right to contest the suspension outside of the criminal proceeding. Contact us immediately so that deadline doesn’t close.

Why Attorney Matheny’s Background Changes Your Defense

Eric M. Matheny interned at the Miami-Dade State Attorney’s Office during law school, then joined as an Assistant State Attorney after graduating, handling misdemeanor, DUI, juvenile, and felony cases. He prosecuted from inside the office that can handle your case. That experience means he understands which factors lead prosecutors there to prioritize cases, push for maximum penalties, or consider a reduction, and he uses that knowledge when building your defense.

Attorney Matheny has tried more than 50 jury and non-jury trials. Every defense strategy is built around the specific facts of your case, not a standardized playbook. He has been recognized by Expertise.com as one of the Best DUI Lawyers in Miami for 2024 and 2025, carries an Excellent rating on Avvo, and has received the Avvo Client’s Choice Award. He is a member of the Florida Association of Criminal Defense Lawyers and The Florida Bar. Throughout your case, we keep you informed of where things stand and what your options are at every stage.

Don’t Wait to Protect Your License & Your Case

The 10-day DHSMV deadline is one of the fastest-closing windows in Florida DUI law. Options that exist today won’t exist next week if that hearing isn’t requested. A free case evaluation with The Law Offices of Eric M. Matheny, P.A. costs nothing and can put you in a position to act before those options disappear.

Call The Law Offices of Eric M. Matheny, P.A. at (305) 504-6655 any time, day or night. We’re available 24/7 for new clients, and payment plans are available.