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Clean Diesel Technologies Reports 2005 Third-Quarter Results

STAMFORD, Conn.--Nov. 1, 20054, 2005--Clean Diesel Technologies Inc. ("Clean Diesel") (OTCBB:CDTI) (AIM:CDT) (AIM:CDTS), a developer of chemical and technological solutions to reduce harmful engine emissions, today reported revenues for the third quarter of 2005 and for the nine-month period ended Sept. 30, 2005.

Revenues in the third quarter were lower than in the same period of 2004 but revenues for the nine-month period ended Sept. 30, 2005, increased compared to the same period of 2004. Total revenue for this year's third quarter was $166,000 with a net loss of $1,489,000, or $0.09 loss per share. This compares to total revenue of $241,000 and a net loss of $1,243,000, or $0.08 loss per share, for the same period in 2004. For the nine months ended Sept. 30, 2005, total revenue was $626,000 with a net loss of $3,966,000, or $0.23 loss per share. In the comparable 2004 period, revenue was $528,000, with a net loss of $2,936,000, or $0.19 loss per share.

Revenues increased for the nine months ended Sept. 30, 2005, in both additive and hardware sales as a result of a successful program completion with the state of Pennsylvania for the EPA-verified Platinum Plus(R) Purifiers and increased additive sales in the mining and off-road sectors. In the third quarter Clean Diesel committed significant resources to responding to questions posed by the EPA, as well as finalizing agreements with Mitsui for the transfer of the wire mesh filter intellectual property and completing the Fleetguard blending and distribution agreement for Platinum Plus. These programs were all completed and announced in September. The results from testing of the Platinum Plus fuel-borne catalyst over eight months by EPA-approved laboratories confirmed that any potential allergenic platinum emissions from use of the product were hundreds to thousands of times below the lowest published safe exposure level and were consistent with reported platinum emissions from catalyzed emission control devices.

The acquisition of the wire mesh filter technology and the distribution agreement with Fleetguard are expected to support revenue growth in the near term.

General and administrative expenses increased in 2005 versus 2004 as a result of higher personnel and related costs in the U.S. and Europe. In the last 12 months, Clean Diesel hired a new CEO, vice president and chief technology officer and a manager in Europe in order to strengthen its commercialization effort. Clean Diesel also incurred increased expenses in 2005 related to the EPA testing.

As previously announced on Nov. 7, 2005, Clean Diesel completed a $6.3 million (GBP 3.6 million) private placement of its common stock with several existing and new shareholders, as well as directors and management.

Full financial information is included in the company's Form 10-Q filed with the Securities and Exchange Commission (www.SEC.gov).

About Clean Diesel Technologies Inc.

Clean Diesel Technologies Inc. and its U.K. representative office, Clean Diesel International LLC, is a developer of chemical and 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.

TABLES FOLLOW

                    CLEAN DIESEL TECHNOLOGIES INC.
                       STATEMENTS OF OPERATIONS
                              (Unaudited)
                 (in thousands except per share data)

                                  Three Months Ended Nine Months Ended
                                       Sept. 30,         Sept. 30,
                                     2005     2004     2005     2004
Revenue:
Additive revenue                       $97      $88     $283     $199
Hardware revenue                        56      135      314      280
License and royalty revenue             13       18       29       49
Total revenue                          166      241      626      528

Costs and expenses:
Cost of revenue                        102      149      373      334
General and administrative           1,260    1,150    3,635    2,761
Research and development               222      174      369      344
Patent amortization and other
 expense                                61       22      125       61

Loss from operations                (1,479)  (1,254)  (3,876)  (2,972)
Foreign currency exchange
 gain/(loss)                           (12)      --     (106)      --
Interest income                          2       11       16       36

Net loss attributable to common
 stockholders                      $(1,489) $(1,243) $(3,966) $(2,936)

Basic and diluted loss per common
 share                              $(0.09)  $(0.08)  $(0.23)  $(0.19)

Weighted average number of common
 shares outstanding - basic and
 diluted                            17,193   15,757   17,176   15,719




                    CLEAN DIESEL TECHNOLOGIES INC.
                            BALANCE SHEETS
                 (in thousands, except per share data)

                                                   Sept. 30,  Dec. 31,
                                                     2005       2004
                                                  (Unaudited)    
ASSETS
CURRENT ASSETS:
Cash and cash equivalents                               $494   $4,265
Accounts receivable, net of allowance of $10 and
 $3 in 2004 and 2003, respectively                       101      145
Inventories                                              265      387
Other current assets                                      85       71
Total current assets                                     945    4,868
Patents, net                                             530      418
Fixed assets, net of accumulated depreciation of
 $233 in 2005 and $188 in 2004, respectively             193      200
Other assets                                              27       27
Total assets                                          $1,695   $5,513

LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:

Accounts payable and accrued expenses                   $468     $391
Total current liabilities                                468      391


STOCKHOLDERS' EQUITY:
Preferred Stock, par value $0.05 per share,
 authorized 100,000 and 80,000 respectively, no
 shares issued and outstanding                            --       --
Common Stock, par value $0.05 per share,
 authorized 30,000,000 shares, issued and
 outstanding 17,193,047 and 17,165,868 shares
 respectively                                            860      858
Additional paid-in capital                            38,500   38,431
Accumulated deficit                                  (38,133) (34,167)
Total stockholders' equity                             1,227    5,122
Total liabilities and stockholders' equity            $1,695   $5,513