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Profile: William D. Guentzler, PhD

61115 Fire Barrel Drive
La Quinta, CA 92253
Phone: (619) 823-9081
Fax: (619) 390-9081

Dr. William Guentzler has over thirty years of experience as an expert witness and forensic examiner, serving in over 475 city, state, and federal court cases nationwide in support of both plaintiffs and defendants. In addition, Dr. Guentzler is also a Professor Emeritus at San Diego State University where he served as a Professor of Engineering and Industrial Technology for the last 36 years. Dr. Guentzler also holds a license as a Private Investigator in the state of Arizona.

Dr. Guentzler is also highly involved in research. He has conducted countless searches of the National Highway Traffic Safety Administration databases for specific consumer complaints, Technical Service Bulletins (TSB's), and Manufacturers' Recalls for products and automobiles specific to your case.  His credits include 41 technical publication articles, 34 research papers, 18 research grants, and he is currently affiliated with 15 different professional organizations.


  • The Ohio State University, Ph.D., Industrial Technology, 1973.
  • Michigan State University, Traveling Scholar Program, Special Minor in Driver & Traffic Safety Education, 1972.
  • Wayne State University, Certificate in Hydraulics and Pneumatics for Industrial Educators, 1967.
  • Kent State University, M.A., Industrial Technology, 1968.
  • Kent State University, B.S. Industrial Technology, Driver & Traffic Safety, 1964
  • Arizona State Department of Public Safety, Private Investigator Agency License Number 1539346, March, 2005.
  • State of California, Life Credential in Driver & Traffic Safety Education, 1970.
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Area(s) of Expertise

  • Traffic Accidents, Product Liability, Fire Cause and Origin involving:
    • Automobiles
    • All terrain, two wheeled Cycles (ATC's)
    • All terrain, four wheeled Vehicles (ATV's)
    • Golf Cars and Personal Mobility Vehicles (PMV's)
    • Hybrid Electric Vehicles
    • Motorcycles
    • Motor Homes and recreational vehicles
    • Trucks, including eighteen wheelers

  • Air Bags
  • Battery Explosions and parasitic loads
  • Braking Systems
  • Cooling Systems
  • Electrical Systems
  • Fuel Systems and design
  • Ignition Systems
  • Seat Belts
  • Steering
  • Suspension
  • Tires, including de-laminations