Clean Diesel signs up first UK road transport fleet.

STAMFORD, Conn. -- Clean Diesel International, LLC, a wholly owned subsidiary of Clean Diesel Technologies, Inc. (EBB: CDTI & AIM: CDT/CDTS), developer of technological solutions to reduce harmful engine emissions, is pleased to announce today the win of its first UK commercial fleet contract for Platinum Plus([R]) DFX with Burgoynes (Lyonshall) Limited. Burgoynes is a medium-sized road haulage company operating heavy goods vehicles in the UK.

Burgoynes (Lyonshall) Limited is Clean Diesel's first UK customer for Platinum Plus DFX and will apply its Platinum Plus across Burgoynes' fleet.

The contract win follows positive results from Clean Diesel's ongoing UK fleet trials demonstrating that significant fiscal savings can be achieved irrespective of fleet size. Clean Diesel's fuel borne catalyst for fuel economy demonstrates an average fuel economy saving of 5%.

Clean Diesel is currently running trials with small, medium and large fleets in the UK, and is involved in several UK programs to demonstrate lowest cost emission reduction in preparation for the introduction of London's low emission zone in 2008 thereby enabling biodiesel usage across the country.

Jonathan Percy, Fleet Engineer, of Burgoynes comments: "We are delighted to have entered into an agreement with Clean Diesel which was largely based upon the successful trials and the impressive benefits that Platinum Plus delivers in terms of fuel economy and emission reductions."

Tim Rogers, Vice President International of Clean Diesel and Managing Director of Clean Diesel International, LLC, adds: "We are pleased that our trials have demonstrated the benefits of Clean Diesel's products as well as their excellent performance for fleets. The contract win proves the increasing demand for our products and we look forward to working with the road transport industry to develop these opportunities."

Notes to editor

Clean Diesel Technologies, Inc. and its UK representative office, Clean Diesel International LLC, is a developer of technological solutions to reduce harmful engine emissions. Clean Diesel Technologies has patented products that reduce emissions from combustion engines while simultaneously improving fuel economy and power. Products include Platinum Plus([R]) fuel-borne catalysts (FBC), the Platinum Plus Purifier System and the ARIS([R]) 2000 urea-injection systems for selective catalytic reduction of NOx. Platinum Plus and ARIS are registered trademarks of Clean Diesel Technologies, Inc. For more information, visit CDT at www.cdti.com or contact the Company directly.

Certain statements in this news release 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 the Company's filings with the Securities and Exchange Commission, uncertainties and other factors which may cause the actual results, performance or achievements of the Company, or industry results, 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.