Philip Stephenson, PH.D.

Dr. Philip Stephenson is General Manager, PACCAR Technical Center. He has held this position since 2012.

Prior to his current position, Dr. Stephenson was Vice President, Exide Technologies. Before joining PACCAR, he worked as Director of Product Development and Engineering with A123 Systems where he led engineering teams in the US and Germany. Dr. Stephenson was also Chief Engineer for product development and validation at automotive supplier Behr and was instrumental in the expansion of Behr’s test facilities to support their North American automotive business.

Early in his career, Dr. Stephenson worked as a combustion research scientist at Mercedes Benz Research in Stuttgart, Germany, an engineering manager at Fluent Inc. and an executive at CD-adapco.

At the PACCAR Technical Center, Dr. Stephenson leads teams responsible for product validation of Peterbilt and Kenworth trucks and for development, calibration and testing of PACCAR diesel and alternative fuel powertrains for North America.

Dr. Stephenson earned a Bachelor of Science in Molecular Biology and a PhD in Mechanical Engineering from the University of Wisconsin and a Master of Science in Mechanical Engineering from Arizona State University