Clean Diesel Technologies Reports 2005 First Quarter Results; Company Announces Results from...

STAMFORD, Conn. -- Clean Diesel Technologies Inc. (CDT) (OTCBB:CDTI) (AIM:CDT) (AIM:CDTS), a developer of chemical and technological solutions to reduce harmful engine emissions, announced its results for the first quarter 2005. CDT reported total revenue for the first quarter 2005 of $192,000

In the first quarter, Platinum Plus(R) fuel-borne catalyst (FBC) and Purifier System revenue increased due to the completion of the first of two retrofit projects in Pennsylvania. The second larger project is targeted for completion in the second quarter. In addition, purifier systems were installed on off-road and construction applications in the Northeast. FBC shipments to mining operations increased as additional particulate filters were added to comply with MSHA regulations for reducing particulate matter (PM) in underground mines. The FBC helps keep filters from plugging with soot at low temperatures and avoids the large increase in NO2 emissions from traditional heavily catalyzed systems.

Revenue for ARIS(R), CDT's urea-injection system for NOx reduction, decreased in the first quarter, but is expected to pick up in the second quarter based on delivery of booked orders and new awards to ARIS licensees in the U.S. and Japan.

Expenses increased in the first quarter compared to prior year due to increased personnel costs associated with the international operations, increased sales and marketing activity and platinum emission testing.

Testing Confirms Emissions Substantially Lower Than Standards

As announced in January 2005, CDT has been conducting additional testing during the first quarter to address questions from the EPA (U.S. Environmental Protection Agency) on the use of its FBC. Testing results from two independent EPA-accepted laboratories showed less than 1 percent of the platinum emitted is in a potentially allergenic form; this is similar to reported amounts for platinum emissions from autocats and diesel catalysts currently in use worldwide.

The measured emissions of potentially soluble platinum were under one microgram per horsepower hour of work from an engine emitting over 100,000 micrograms per horsepower hour of toxic soot particulates. The ambient levels of soluble platinum from the use of the Platinum Plus FBC are hundreds to thousands of times below the most stringent standards published for safe exposure on a regular basis using an industry-accepted urban canyon model and assuming varying levels of FBC market penetration.

The independent testing results have been submitted to EPA.

Ongoing Developments

CDT is in discussions for several licensing and distribution agreements for its Platinum Plus FBC and ARIS technologies in both the U.S. and Europe and it expects agreements to be announced in the near future.

In the U.S. CDT has initiated an OEM (Original Equipment Manufacturer) development program targeted at integrating the Platinum Plus FBC into advanced engine-exhaust systems designed to meet strict 2007 particulate emission standards. These standards will require the use of diesel-particulate filters on new engines and the FBC will help keep the filters from plugging with soot during low temperature operation and city driving. Use of the FBC is also expected to reduce the platinum loading used on devices and reduce fuel-economy penalty.

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, 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.

TABLES FOLLOW

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

                                                   Three Months Ended
                                                        March 31,
                                                     2005      2004
Revenue:
Additive revenue                                        $95       $57
Hardware revenue                                         92       119
License and royalty revenue                               5        18
Total revenue                                           192       194

Costs and expenses:
Cost of revenue                                         110       132
General and administrative                            1,165       790
Research and development                                 59        80
Patent amortization and other expense                    39        12

Loss from operations                                 (1,181)     (820)
Other income (expense):
Foreign currency exchange gain                          (19)       --
Interest income                                           9        12

Net loss                                            $(1,191)    $(808)

Basic and diluted loss per common share              $(0.07)   $(0.05)

Weighted average number of common shares
 outstanding - basic and diluted                     17,166    15,679



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

                                               March 31,  December 31,
                                                 2005         2004
                                              (Unaudited)
Assets
Current assets:
Cash and cash equivalents                         $2,996       $4,265
Accounts receivable, Net                             156          145
Inventories                                          295          387
Other current assets                                 125           71
Total current assets                               3,572        4,868
Patents, Net                                         496          418
Fixed Assets, Net                                    220          200
Other assets                                          27           27
Total assets                                      $4,315       $5,513

Liabilities and Stockholders' Equity
Current liabilities:

Deferred compensation and pension benefits          $---         $---
Accounts payable and accrued expenses                384          391
    Total current liabilities                        384          391


Stockholders' equity:
Preferred stock, par value $0.05 per share,
 authorized 100,000 shares, no shares issued
 and outstanding                                      --           --
Common stock, par value $0.05 per share,
 authorized 30,000,000 shares, issued and
 outstanding 17,165,868                              858          858
Additional paid-in capital                        38,431       38,431
Accumulated deficit                              (35,358)     (34,167)
Total stockholders' equity                         3,931        5,122
Total liabilities and stockholders' equity        $4,315       $5,513