Clean Diesel Technologies, Inc. (OJ:CDIA) Corporate news announcement processed and transmitted by Hugin AS. The issuer is solely responsible for the content of this announcement. ---------------------------------------------------------------------- --------------



Stamford, Connecticut-November 4, 2008-Clean Diesel Technologies, Inc. (NASDAQ:CDTI; XETRA:CDIA; AIM:CDT), the cleantech emissions reduction company, will announce its third quarter 2008 financial results on Tuesday, November 11, 2008 at 7:00 a.m. Eastern Time (12:00 BST & 13:00 CET).

The announcement will be followed by a conference call at 10:00 a.m. Eastern Time to discuss the results and provide a general business update. The call will be available on the Company's website at www.cdti.com, or by calling: 877 407 8031 U.S. callers, or +1 201 689 8031 for international callers. The conference call will be led by Dr. Bernhard Steiner, CEO and Ann Ruple, CFO of Clean Diesel Technologies, Inc.

A webcast will also be archived on the Company's website. Additionally, a telephone replay of the call will be available approximately one hour following the call through midnight Eastern Time on Tuesday, November 18th, 2008 and can be accessed by calling: 877 660 6853 (U.S. callers) or +1 201 612 7415 (international callers) and entering account number 286 and conference ID 302286.

About Clean Diesel Technologies Clean Diesel Technologies (NASDAQ: CDTI) is a cleantech company providing sustainable solutions to reduce emissions, increase energy efficiency and lower the carbon intensity of on- and off-road engine applications. Clean Diesel's patented technologies and products allow manufacturers and operators to comply with increasingly strict regulatory emissions and air quality standards, while also improving fuel economy and power. The Company's solutions, which are in commercial use worldwide, significantly reduce emissions formed by the combustion of fossil fuels and biofuels, including particulate matter (PM), nitrogen oxides (NOx), carbon monoxide and hydrocarbons. Clean Diesel solutions also reduce carbon dioxide (CO2) emissions, a key greenhouse gas associated with global climate change.

Clean Diesel develops and manages intellectual property from original concept to full-scale commercial deployment. Its offerings include ARIS® Selective Catalytic Reduction (SCR); the patented combination of SCR and Exhaust Gas Recirculation; hydrocarbon injection for emissions control applications; Platinum Plus® Fuel-Borne Catalyst (FBC); the Purifier(TM) family of particulate filter systems; and its Wire Mesh Filter particulate filter technologies. The Company was founded in 1995 and is headquartered in Stamford, Connecticut. A wholly owned subsidiary, Clean Diesel International, LLC, is based in London, England. For more information, please visit www.cdti.com.

Please visit us on the World Wide Web at: www.cdti.com

Contacts:

Crescendo Communications, LLC Clean Diesel Technologies, Inc. (U.S. investor contact) Ann Ruple David K. Waldman or Klea Theoharis CFO +1 212 671 1020 +1 203 327 7050 cdti@crescendo-ir.com aruple@cdti.com

Innovator Capital Limited Charles Stanley Securities (Financial press inquiries) Nominated Adviser Shaun Brown or Jade Summer Philip Davies / Freddy Crossley +44 20 7297 6840 Tel: +44 20 7149 6457 jade.summer@innovator-capital.com

Matter Communications (Technical press inquiries) Jacqueline Volovich +1 415 984 6281 jackie@matternow.com

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The press release can be downloaded from the following link:

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Clean Diesel Technologies, Inc. 300 Atlantic Street, Suite 702 Stamford, CT USA

WKN: 898074; ISIN: US18449C1045; Listed: Xetra Stars in Frankfurter Wertpapierbörse;



LINK: http://hugin.info/136602/R/1266414/279045.pdf

Clean Diesel Technologies, Inc.

http://www.cdti.com

ISIN: US18449C1045

Stock Identifier: XFRA.CDIA

US: OTCBB: CDTI

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