Westport Announces First Quarter Fiscal 2011 Conference Call for Wednesday, August 4, 2010

Westport will disclose its first quarter, fiscal 2011 financial results on Wednesday, August 4, 2010 after market close.

Westport Signs New Development and Commercialization Agreement

New Agreement Further Demonstrates Westport’s Commitment and Ability to Develop Competitive Biogas and Natural Gas Engines and Outlines R&D Expenses and Revenue Stream

Volvo Powertrain, a subsidiary of Volvo AB, and Westport have signed an agreement defining Westport’s responsibility to develop biogas- and natural gas-fuelled engine products for Volvo.

Westport Heavy-Duty Engine Receives 2010 U.S. EPA Certification

Westport HD 2010 15L engine has been certified by the U.S. Environmental Protection Agency (EPA) to 2010 emissions compliance. The GX engine is certified and compliant to U.S. EPA 2010 emission limits of 0.2 g/bhp-hr oxides of nitrogen (NOx) and 0.01 g/bhp-hr particulate matter (PM) without the use of emissions credits. Adding to the U.S. certification, Australia’s Department of Infrastructure, Transport, Regional Development and Local Government has certified the Westport HD engine in compliance with the Australian Design Rules (ADR) 80/03, which takes effect for all heavy-duty truck models starting January 2011.

Westport Acquires OMVL of Italy and 100% of Juniper Engines for €19 Million

Accretive Acquisition Expected to Add Approximately US$25M in Revenue and Launch Light-Duty Automotive Strategy for Westport's Juniper Engines

Westport has announced that it has acquired 100% of the outstanding shares of OMVL SpA and OMVL’s 51% share of Juniper Engines Inc. for a combined consideration of €19.0 million (approximately US$23.4 million).

Westport Files Management Information Circular for Annual General and Special Meeting of Shareholders

Westport has filed its Management Information Circular for the Company’s upcoming Annual and Special General Meeting for shareholders to be held on July 15, 2010. In connection with the AGM, Westport proposes to reduce the size of the Board of Directors from 10 members to 8

Westport Reports Fourth Quarter & Year End Financial Results

Fourth Quarter Revenue Up 35.7%

Westport reported financial results for the fourth quarter and fiscal year ended March 31, 2010 (FY2010) and provided an update on operations. All figures are in Canadian dollars based on Canadian GAAP unless otherwise stated.

Westport Announces Fourth Quarter & Year End Conference Call for Tuesday, June 1, 2010

Westport will disclose its fourth quarter and fiscal year 2010 financial results on Tuesday, June 1, 2010 after market close.

Warrant Exercise Generates $8.4 million in Cash for Westport

Technology Partnerships Canada Program Successfully Delivers Financial Returns to Government of Canada

Westport announced that 790,614 warrants previously issued to Industry Canada, a department of the Government of Canada, have been exercised at a price of $10.65 per warrant generating $8.4 million in cash for the company.

Westport Achieves High Volume Scale Production with Delphi Automotive Systems, LLC to Supply Westport HD Injectors

Westport has reached high volume scale production capability in a deal with Delphi Automotive Systems, LLC, to supply Westport’s proprietary HD fuel injectors. Production is expected to begin in the second half of 2010.

Westport Announces the First Global Carbon Finance Program for Transportation Registered to the Voluntary Carbon Standard

Westport, in collaboration with Grütter Consulting, has launched a the Westport Carbon Project, program to monetize the carbon emission reductions associated with Cummins Westport (CWI) and Westport HD natural gas engines.