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Clean Diesel Technologies Reports First Quarter Results

STAMFORD, Conn.--May 7, 2002--Clean Diesel Technologies Inc. (CDT) (EBB:CDTI) (AIM:CDT) (AIM:CDTS) today announced results for its first quarter ended March 31, 2002.

Revenue in this year's first quarter was $71,000 with a net loss attributable to common stockholders of $662,000, or $0.06 loss per share, compared with revenue of $24,000 and a net loss of $760,000, or $0.29 loss per share, in the first quarter of 2001.

Product revenue in the first quarter of this year increased to $60,000 from $13,000 in the year earlier period, while license and royalty revenue remained flat. The 2002 first quarter net loss included $95,000 of non-cash compensatory stock warrant expense for warrants issued in 2001, but vested in 2002, and the 2001 first quarter net loss included non-cash charges for preferred stock dividends of $201,000.

Chairman and CEO Jeremy Peter-Hoblyn commented: "Since the beginning of this year, we have seen several very important developments occur that we believe could enhance the markets for our products and technologies. These include the publishing of the final procedure by the California Air Resources Board (CARB) for verification of retrofit systems for emission reduction from diesel engines, which is scheduled to be adopted on May 16, and the U.S. Environmental Protection Agency's (EPA) voluntary retrofit program for the remaining 49 states, which has a similar verification program protocol in preparation.

"In addition, the European Union Commission Motor Vehicle Emission Group (MVEG) is developing a protocol designed to enable countries to provide tax incentives for cleaner fuels, including fuel additives. This protocol is likely to be published during the summer."

Compliance with the CARB program is mandatory and will start immediately with a target to retrofit 1.2 million engines by 2007. The company is in the process of applying for verification of its patented Platinum Plus® diesel fuel catalyst with both the CARB and the U.S. EPA.

"The market opportunities for Platinum Plus will be greatly enhanced as these programs become confirmed," Peter-Hoblyn said.

During this year's first quarter the company shipped three prototype units of the mobile ARIS(TM) nitrogen oxide (NOx) reduction system to Mitsui & Co. Ltd. of Japan.

"We are anticipating expanding the existing license with Mitsui for use of ARIS on stationary diesel engines to include using ARIS for mobile applications in Japan, as well," Peter-Hoblyn said.

For the first quarter of 2002, G&A was $556,000 and R&D was $111,000 as compared with $435,000 and $84,000, respectively, for the year-earlier period. These increases were the result of additional sales and marketing resources, incurred initial planning expense in support of verification of Platinum Plus with the CARB and the U.S. EPA and an absorbed non-cash compensatory stock warrant expense.

The company's balance sheet at March 31, 2002 contained cash and cash equivalents of $3.3 million, total assets of $3.7 million and $381,000 of long-term liabilities.

As announced in December 2001, the company raised $5.2 million through the issuance of 2.6 million shares of common stock while at the same time converting all of its preferred stock to 5.9 million shares of common stock and listing all of the common stock on the Alternative Investment Market (AIM) of the London Stock Exchange.

About Clean Diesel Technologies Inc.

Clean Diesel Technologies is a specialty chemical company with patented advanced catalyst technologies that reduce emissions from diesel engines while simultaneously improving fuel economy and power. Products include Platinum Plus fuel catalysts and ARIS 2000 urea injection systems for selective catalytic reduction of NOx.

Certain statements in this news release constitute "forward-looking statement" within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statement 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.

Note to Editors: Platinum Plus is a registered trademark of Clean Diesel Technologies Inc.

                    CLEAN DIESEL TECHNOLOGIES INC.

                       STATEMENTS OF OPERATIONS
                              (Unaudited)

                                  (in thousands except per share data)

                                            Three Months Ended
                                                 March 31,
                                            2002          2001

Revenue:
Product revenue                            $    60       $    13
License and royalty revenue                     11            11

Total revenue                                   71            24

Costs and expenses:
Cost of sales                                   44             7
General and administrative                     556           435
Research and development                       111            84
Patent filing and maintenance                   28            48

Loss from operations                          (668)         (550)
Interest income                                (15)           (3)
Interest expense                                 9            12

Net loss before preferred stock dividend      (662)         (559)
Preferred stock dividend (non-cash)              0           201

Net loss attributed to common
 stockholders                              $  (662)      $  (760)

Basic and diluted loss per common share    $ (0.06)      $ (0.29)

Weighted average number of common shares
 outstanding -- basic and diluted           11,214         2,661


                    CLEAN DIESEL TECHNOLOGIES INC.

                             BALANCE SHEET

                                  (in thousands except share data)

                                          March 31,     Dec. 31,
                                            2002          2001
                                         (Unaudited)
Assets
Current assets:
Cash and cash equivalents                  $ 3,254       $ 4,023
Accounts receivable                             13           197
Inventories                                    291           296
Other current assets                           105            96

Total current assets                         3,663         4,612

Other assets                                    44            46

Total assets                               $ 3,707       $ 4,658


Liabilities and Stockholders' Deficit
Current liabilities:
Notes payable                              $     0       $   250
Accounts payable and accrued expenses          411           558

     Total current liabilities                 411           808

Deferred compensation and pension benefits     381           368

     Total long-term liabilities               381           368

Stockholders' equity:
Preferred stock, par value $0.05 per share,
 authorized 80,000 shares, no shares issued
 and outstanding                                --            --
Series A convertible preferred stock, par
 value $0.05 per share, $500 per share
 liquidation preference, authorized 20,000
 shares, no shares issued and outstanding       --            --
Common stock, par value $0.05 per share,
 authorized 15,000,000 shares, issued and
 outstanding 11,214,280 shares                 561           561
Additional paid-in capital                  27,153        27,058
Accumulated deficit                        (24,799)      (24,137)

Total stockholders' equity                   2,915         3,482

Total liabilities and stockholders'
 equity                                    $ 3,707       $ 4,658