Attached files
Exhibit 23
Consent of Independent Registered Public Accounting Firm
The Board of Directors
Clean Diesel Technologies, Inc.:
We consent to the incorporation by reference in the registration statements on Form S-3 (No. 333-166865) and Forms S-8 (Nos. 333-151777, 333-117057, 333-33276, and 333-16939) of Clean Diesel Technologies, Inc. of our report dated March 29, 2012, with respect to the consolidated balance sheets of Clean Diesel Technologies, Inc. and subsidiaries as of December 31, 2011 and 2010, and the related consolidated statements of operations, stockholders equity and comprehensive loss, and cash flows for the years then ended, which report appears in the December 31, 2011 annual report on Form 10-K of Clean Diesel Technologies, Inc.
/s/ KPMG LLP
Los Angeles, California
March 29, 2012