Exhibit 99.9
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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statements No. 333-165812 and No. 333-168847 on Form S-8 and No. 333-205869 on Form F-10/A of our report dated March 9, 2015 (October 15, 2015 as to Note 23), relating to the consolidated financial statements of Westport Innovations Inc. and subsidiaries (“Westport”), and our report dated March 9, 2015 (July 23, 2015 as to the effects of the material weakness described in the Management’s Annual report on Internal Control over Financial Reporting (revised)) relating to internal control over financial reporting (which report expresses an adverse opinion on the effectiveness of Westport’s internal control over financial reporting because of a material weakness), appearing in this Annual Report Amendment No. 2 on Form 40-F/A of Westport for the year ended December 31, 2014.
/s/ Deloitte LLP
Chartered Professional Accountants
Vancouver, Canada
October 15, 2015