CDTi to Announce Third Quarter Fiscal Year 2012 Financial Results; Conference Call on November 13, 2012

CDTi to Announce Third Quarter Fiscal Year 2012 Financial Results; Conference
Call on November 13, 2012

VENTURA, Calif., Oct. 31, 2012 (GLOBE NEWSWIRE) -- Clean Diesel Technologies,
Inc. (Nasdaq:CDTI) ("CDTi"), a cleantech emissions control company, announced
today that it will report third quarter fiscal year 2012 financial results on
Tuesday, November 13, 2012 before the open of the market. CDTi will then hold
a conference call to discuss the results with the investment community that
day at 8:00 a.m. PT (11:00 a.m. ET).

To participate in the conference call, dial toll-free +1 (877) 303-9240 and
use confirmation code 59676278. International participants should dial +1
(760) 666-3571 and use the same confirmation code.

The conference call will be webcast live on the CDTi website at www.cdti.com
under the "Investor Relations" section. To listen to the live webcast,
participants should visit the site at least 15 minutes prior to the conference
to download any required streaming media software. An archived recording of
the conference call will be available on the Clean Diesel website for 30 days.

About CDTi

CDTi 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. CDTi 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. CDTi 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.

The CDTi logo is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=5742

CONTACT: Kristi Cushing, Investor Relations Manager
         Tel:  +1 (805) 639-9555

CDTi Logo