Volvo Trucks Unveils 13 Liter Natural Gas Engine for North American Market with Westport™ HPDI Technology

Westport Innovations Inc. (TSX:WPT) (NASDAQ:WPRT), the global leader in natural gas engines, today announced that Volvo Trucks today unveiled its plans to launch a 13 liter heavy-duty natural gas engine featuring Westport™ high pressure direct injection (HPDI) technology. The product is scheduled to launch for the North American market in 2014.

"The partnership with the Volvo Group is an important product development program and will help meet the increasing demand for natural gas engines and vehicles in the heavy-duty market." said David Demers, CEO of Westport Innovations.

As previously disclosed in a press release dated February 27, 2012, under the terms of the agreement, each partner will contribute significant resources and pay for its own people and costs of the program. Westport will lead the program. When the product is launched, Westport will supply its HD system components for an agreed upon amount per engine, comparable to other such arrangements previously announced.

About Westport Innovations Inc.
Westport Innovations Inc. is a leading global supplier of proprietary solutions that allow engines to operate on clean-burning fuels such as compressed natural gas (CNG), liquefied natural gas (LNG), hydrogen, and renewable natural gas (RNG) fuels such as landfill gas and helps reduce greenhouse gas emissions (GHG). Westport technology offers advanced LNG fueling systems with direct injection natural gas engine technology for heavy-duty vehicles such as highway trucks and off-road applications such as mining and rail.  Westport's joint venture with Cummins Inc., Cummins Westport Inc. designs, engineers and markets spark-ignited natural gas engines for North American transportation applications such as trucks and buses.  Westport LD division is one of the global leaders for natural gas and liquefied petroleum gas (LPG) fuel in passenger cars, light-duty trucks and industrial applications such as forklifts. To learn more about our business, visit our website or subscribe to our RSS feed at www.westport.com, or follow us on Twitter @WestportDotCom.

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Inquiries:
Darren Seed
Vice President, Investor Relations & Communications
Westport Innovations Inc.
Phone: 604-718-2046
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