Michigan's Leading Drunk Driving Defense Attorney
Defending drunk driving cases for over 30 years across Michigan.
Court-Qualified Expert Witness · SFST · Datamaster · Intoxilyzer 9000
(734) 941-8800 — Romulus / Detroit Metro Airport
Recent Victories
Michigan DUI Defense Services
Comprehensive OWI/DUI Defense Throughout Metro Detroit and Wayne County
First Offense OWI
Aggressive defense for first-time drunk driving charges. We challenge breath tests, field sobriety tests, and the legality of the traffic stop.
District Court
Second Offense OWI
Aggressive defense for repeat drunk driving charges. A second offense carries substantially greater penalties and requires immediate, experienced representation.
Repeat Offense
Third Offense OWI
Felony drunk driving defense for clients facing life-changing consequences, including prison exposure, license revocation, and vehicle forfeiture issues.
Felony Defense
Super Drunk / High BAC
Defense against Michigan's High BAC (.17 and above) charges carrying enhanced penalties including mandatory vehicle immobilization.
Enhanced Penalties
Breath Test Challenges
Court-qualified expert in Datamaster DMT and Intoxilyzer 9000 breath testing. We identify instrument errors, procedural violations, and invalid results.
Expert Witness Qualified
Field Sobriety Test Defense
NHTSA-certified SFST instructor and expert witness. We challenge improper test administration, environmental conditions, and officer qualifications.
SFST Expert
Impaired Driving / OWVI
Strategic advice and defense concerning pleas to impaired driving, including whether an OWVI resolution is advantageous under the facts of your case.
Plea Analysis
License Restoration
Representation before the Michigan Secretary of State Driver Assessment and Appeal Division. Restore your driving privileges after OWI conviction.
DAAD Hearings
OWI Blood Test Cases
Defense against blood alcohol test results. We challenge chain of custody, improper collection and preservation, laboratory methodology, and the accuracy of GC-FID analysis.
Forensic Blood Analysis
Michigan DUI Penalties
Attorney William J. Maze
Michigan DUI Defense Attorney · Romulus Office Near Detroit Metro Airport
William J. Maze has been defending drunk driving cases for over 30 years across Michigan. He frequently lectures on DUI defense law and techniques, and is a court-qualified expert witness in standardized field sobriety testing, Datamaster breath testing, and Intoxilyzer 9000 breath testing.
- Court-Qualified Expert Witness — SFST, Datamaster DMT, Intoxilyzer 9000
- NHTSA-Certified SFST Instructor
- Former President — Criminal Defense Attorneys of Michigan (2014–2015)
- Former Adjunct Professor — Forensic Science, Madonna University
- Member — National College for DUI Defense
- Member — National Association of Criminal Defense Lawyers
- Board Member — Michigan Association of OWI Attorneys
Awards & Recognition
Popular Articles
Some of the most frequently read sections. Search over 5,000 articles on virtually any drunk driving topic.
Breath Test Refusal
If you refused to take a breath or blood test after arrest, you have only 14 days to request a hearing before your license is suspended.
Driver's License Restoration
If you are struggling to survive without a Michigan driver's license due to revocation or suspension, you need help from qualified lawyers.
Free Case Evaluation
All information provided through this form is kept confidential and is protected under Michigan's attorney-client privilege rules.
Expert Witness
William Maze has been qualified by numerous Michigan courts as a DUI expert witness in SFSTs and Michigan Datamaster breath testing.
President of CDAM 2014–2015
Michigan's largest and most prominent criminal defense organization elected William Maze as its statewide president.
How to Select the Right DUI Lawyer
Michigan has many top notch criminal defense lawyers, but suffers from far too few dedicated DUI defense attorneys.
Ketamine OWI Defense
Ketamine is a Schedule III controlled substance, so Michigan's zero-tolerance provision does not apply. Prosecutors must prove actual influence or visible impairment — not the mere presence of ketamine in blood.
Amphetamine OWI Defense
A positive amphetamine result does not prove impairment. Prosecutors must show the driver's ability to operate the vehicle was substantially and materially affected — and low-level findings below the laboratory's lowest calibration standard raise serious reliability questions.
Metro Detroit DUI Attorney — Three Office Locations
Client Testimonials
Kind words from former clients.
William Maze Videos
Videos and presentations. Attorney Maze is available to consult with media on all DUI charges, forfeiture cases, and FOIA issues.
Overview of Michigan DUI
A complete walk-thru on Michigan OWI charges from start to finish, including how to select a Michigan DUI attorney and how to plan ahead.
- Choosing an Attorney
- Reasonable Goals
- What Will Happen?
- Step-By-Step
Should You Submit to Field Sobriety Tests?
No. You always fail field sobriety tests, no matter how well you perform the tasks. Worse still — you always look guilty trying to perform FSTs.
- SFST
- Walk and Turn
- One Leg Stand
- HGN
- NHTSA
Did You Refuse to Blow? Oh no!
Michigan's implied consent laws, one-year suspension, and how you can save your driver's license following a refusal.
- Chemical Test Refusals
- Breath vs. Blood Tests
- 14 Day Requirement
- DLAD & Circuit Court