CDTi President and CEO R. Craig Breese to Step Down

CDTi President and CEO R. Craig Breese to Step Down

Board of Directors to Begin Search for Successor

VENTURA, Calif., Dec. 10, 2013 (GLOBE NEWSWIRE) -- Clean Diesel Technologies,
Inc. (Nasdaq:CDTI) ("CDTi" or the "Company"), a leader in advanced emissions
control solutions, announced today that R. Craig Breese has resigned his
position as President, Chief Executive Officer and a member of the Board of
Directors to pursue other opportunities. Mr. Breese will serve in a
transitional capacity through January 8, 2014. The Board of Directors will
undertake to identify and consider candidates for Mr. Breese's successor and
has established an interim Office of the Chief Executive Officer to provide
ongoing leadership and continuity for the business following Mr. Breese's
departure. The Office of the Chief Executive Officer will be filled by Nikhil
A. Mehta, CDTi's Chief Financial Officer, and Pedro J. Lopez-Baldrich, CDTi's
General Counsel and Vice President of Administration. Mr. Mehta and Mr.
Lopez-Baldrich will temporarily assume the responsibilities of the Chief
Executive Officer and will report directly to the Board of Directors.

"On behalf of the Board of Directors, I want to thank Craig for his many
contributions to CDTi during his tenure," said Alexander Ellis, Chairman of
the Board of Directors. "Since joining CDTi, he has successfully led the
business through a challenging economic environment, while ensuring the
Company is well-positioned to capitalize on its capabilities as a leading
materials technology company and to grow the business. We are grateful to him
for his efforts and success at helping CDTi better realize the Company's
potential and wish him the best in his future endeavors."

About CDTi

CDTi is a vertically integrated global manufacturer and distributor of
emissions control systems and products, focused on the heavy duty diesel and
light duty vehicle markets. CDTi utilizes its proprietary patented Mixed Phase
Catalyst (MPC®) technology, as well as its ARIS® selective catalytic
reduction, Platinum Plus® fuel-borne catalyst, and other technologies to
provide high-value sustainable solutions to reduce emissions, increase energy
efficiency and lower the carbon intensity of on- and off-road engine
applications. CDTi is headquartered in Ventura, California and currently has
operations in the U.S., Canada, France, Japan and Sweden. For more
information, please visit

CONTACT: Kevin M. McGrath
         Cameron Associates, Inc.
         Tel:  +1 (212) 245-4577

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