Clean Diesel Technologies, Inc. Receives Expanded CARB Verification; Poised to Provide Emission Reduction Systems Under California's Truck and Bus Regulation

VENTURA, Calif., Feb. 13, 2012 /PRNewswire/ -- Clean Diesel Technologies, Inc. (NASDAQ:CDTI) ("Clean Diesel" or the "Company"), a cleantech emissions reduction company, is pleased to announce that the California Air Resources Board, or "CARB," has expanded their verification (approval) of the Company's ECS Purifilter® brand emission reduction product to now include larger control devices aimed at heavy duty on-road vehicle engines up to 16.0 liters and 625 horsepower. This verification further increases the wide variety of vehicle engines that Clean Diesel is approved to retrofit and provides an expanded opportunity for the Company's retrofit business under the current CARB Truck and Bus Regulation. Clean Diesel estimates that this Regulation will require well over 100,000 heavy duty diesel trucks to be replaced or retrofitted.

The CARB Truck and Bus Regulation applies to a variety of diesel-fueled trucks and buses. The purpose of the Regulation is to reduce emissions from in-use trucks and buses in order to meet federally imposed clean air standards and to reduce the adverse health effects from truck and bus pollution. For heavier trucks and buses, the regulation mandates that all 1996 through 2006 diesel trucks in Class 7 (gross vehicle weight of 26,001-33,000 pounds) and Class 8 (gross vehicle weight greater than 33,000 pounds) be retrofitted with diesel particulate filters, if not so equipped, to meet state emission standards between 2012 and 2016, with 90% required by year end 2014.

"The Purifilter® brand product is a proven and extremely effective emission reduction system, and the new larger device sizes added by this expansion enable us to provide solutions for some of the largest capacity engines used in California," said Lyndon Smith, Clean Diesel's Vice President and General Manager. "Our turnkey evaluation and installation process, combined with our California-based engineering resources, enables us to provide both verified products and immediate support to our customers to help ensure their compliance with government regulations," added Mr. Smith.

CARB has classified the Company's ECS Purifilter® line of products as "Level 3 Plus" devices. This designation requires reducing emissions of diesel particulate matter greater than or equal to 85 percent and meeting the 2009 nitrogen dioxide emission limit – both of which are key government emission reduction requirements. Clean Diesel's CARB-compliant line of ECS Purifilter® brand systems are ideal for use in retrofitting of municipal vehicles, school buses and heavy trucks alike. Full verification details are available on the CARB website at www.arb.ca.gov.

CARB-compliance information website

In order to assist fleet owners, dealers, distributors and others interested in learning more about CARB initiatives and staying apprised of current regulations, Clean Diesel has launched a dedicated CARB-compliance information website. The website, www.CARBcompliance.info, is hosted by Clean Diesel's wholly-owned subsidiary, Engine Control Systems. The website is also accessible from www.cdti.com, and includes important up-to-date CARB news and resources, a step-by-step detailed fleet conversion process, a listing of the Company's line of emission reduction systems and a list of dealers and distributors in California who are authorized to sell Clean Diesel products.

About Clean Diesel Technologies, Inc.

Clean Diesel 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. Clean Diesel 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. Clean Diesel is headquartered in Ventura, California and currently has operations in the U.S., Canada, U.K., France, Japan and Sweden. For more information, please visit www.cdti.com.

Forward-Looking Statements Safe Harbor

Certain statements in this news release, such as the demand for our retrofit products and the estimate of the number of trucks that will need to comply with the CARB regulations, constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve known or unknown risks, including those detailed in Clean Diesel's filings with the U.S. Securities and Exchange Commission, uncertainties and other factors that may cause the actual results, performance or achievements of Clean Diesel to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. Clean Diesel assumes no obligation to update the forward-looking information contained in this release.

SOURCE Clean Diesel Technologies, Inc.