/// 1 CHANGING THE WAY THE WORLD MOVES Engineering the world's most advanced natural gas engines and vehicles

TWO MARKET LEADERS NOW ONE /// 2

» Westport is changing the way the world moves  Enabling the global shift to a cleaner, cheaper, more sustainable energy source for transportation » Westport has set the standard for engineering expertise, global partnership strategies, and market knowledge for natural gas technologies:  Compressed Natural Gas (CNG)  Liquefied Natural Gas (LNG)  Liquefied Petroleum Gas (LPG) Engineering the World's Most Advanced Natural Gas Engines and Vehicles /// 3

Westport Global Operations Total Global Employees: 1,081 as of March 31 st, 2013 /// 4

» Worldwide, Westport and our affiliates have filed over 700 patent applications, relating to over 180 inventions » Our extensive intellectual property portfolio gives Westport and our partners a distinct competitive advantage » Our natural gas technology portfolio is backed by over a decade of research, development, and commercial product success Leading Technology * Based on the patent search results of publicly available data within the International Patent Classification F02, meeting the search term criteria: one of ("engine" or "combustion" or "injector" or "injection valve") and ("natural gas" or "methane" or "gaseous fuel") and not ("fuel cell" or "turbine"). This chart includes issued or granted patents from: Australia, Brazil, Canada, China, European Patent Office Grants, France, Germany, India, Italy, Japan, Poland, Russia, Spain, UK, USA, USSR, and pending published patent applications from: the European Patent Office, USA, and the World Intellectual Property Office. /// 5

» Westport works directly with top global manufacturers to seamlessly integrate our ideas and technologies into new and existing products and services » We have unique partnerships with 3 of the 5 top engine companies, 5 of the 6 biggest truck makers, global automakers, and some of the largest natural gas fuel suppliers /// 6 Global Partnerships

WHY NATURAL GAS /// 7

» Customers seeking alternatives » Favorable economics » Domestic resource » Abundant supply » Cleanest hydrocarbon fuel /// 8 Why Natural Gas Vehicles? ///////////////////////////////////////////////////////////////////////////////////////// CLEAN ABUNDANT DOMESTIC /////////////////////////////////////////////////////////////////////////////////////////

» “At the current rate of conversion, [Republic Services] plan to have more than 3,100 trucks nationwide running on natural gas and other alternative fuels by the end of 2015.” » “Record sales of its 2012 natural gas vehicles totaling 11,600 cars and trucks.” » FedEx CEO forecasts a major shift to natural gas-powered vehicles » Chairman and CEO Frederick Smith claims that he “expects between 5% and 30% of U.S. … to be fueled by compressed or liquefied natural gas over 10 years.” The major shipping company has started testing both compressed and liquefied natural gas in four trucks, with hopes to expand soon. The decision to explore natural gas options was fueled partly by rising diesel and gasoline costs. For NGVs Natural Gas Industry Acceptance /// 9

WESTPORT The largest portfolio of CARB/EPA certified Ford vehicles /// 10

Natural Gas Offerings For Light Duty /// 11 F-250/350 with 6.2L F-250/350 READY-link™ F-250/350 with 6.2L In-bed and under-bed tanks F-350/450/550 Chassis F-450/550 with 6.8LF-650 with 6.8L F-59 Commercial Chassis with 6.8L E-250/350 With 5.4LE-350 Cutaway With 5.4L E-450 Cutaway With 6.8L F-350/450/550 Chassis

» 20+ years of combined experience » 23,000+ NGV power systems and conversions » Proprietary fueling systems » Extensive engineering capabilities » EPA and CARB-certified vehicles » Recognized as best-in class  Multiyear contracts with Fortune 100 companies /// 12 Strong, Stable Industry Leader

» Largest portfolio » All Ford commercial vehicles  QCM – Qualified Calibration Modifier  QVM – Qualified Vehicle Modifier /// 13 Ford’s Largest QVM Partner

» Leading North American manufacturer  Westport Kentucky Integration Center in Louisville  BAF Installation Center in Dallas » Service network  170 Ford Dealers – and growing - in North America  75+ Ford BPN Dealers /// 14 Fully Integrated Natural Gas Solutions ////////////////////////////////////////////////////////////////////////////////////////////////// OEM quality MANUFACTURING PROCESSES CONTROL /////////////////////////////////////////////////////////////////////////////////////////////////

» Engineering  Full time Engineering staff in Detroit and Dallas  Complete design capabilities  Full CAD, work instructions & BOM » Technical Center and Testing  Full time Calibration staff in Detroit  Complete in-house calibrations  Emission testing / certification » Service  24 x 7 service hotline  Service available at all authorized Ford Dealers Product Integration & Support /// 15

» Direct ordering of final product at Westport-authorized Ford Dealer / Distributor or Fleet Management Company  Dealer orders gasoline vehicle through Ford  Dealer completes order on Westport’s proprietary automated ordering website » Credit and leasing terms will be made available through Ford Motor Credit » Westport authorized Ford Dealer/Distributors certified in CNG vehicles:  Sales Training  Service Training  Parts Availability Ordering  Special Tools  Facility Compliance /// 16

1.Warranted and serviced through your local authorized Ford Dealer/Distributor 2.Meets and exceeds the (OEM) standards, including Federal Motor Vehicle Safety Standards (FMVSS) crash requirements, and EPA emissions requirements 3.Offers a combined gasoline/ CNG fuel range of 650 to 750 miles 4.Automatically starts on CNG, when available 5.Simplified pricing, ordering, delivery process Good for Business 3 yrs. / 50% ACCORDING TO A KELLEY BLUE BOOK ® STUDY ON CNG, IT’S ESTIMATED THAT AFTER 3 YEARS THE WESTPORT WING SYSTEM WILL RETAIN ABOUT 50% OF ITS ORIGINAL VALUE ////////////////////////////////////////////////////////////////////////////////////////////////// /// 17

» Assumptions:  10 truck order in Oklahoma  $4,250 Westport WiNG price after incentive Sample Payback Analysis # of trucks 10 Mileage per truck (annual) 37,500 Fuel economy 14 MPG Total annual mileage (fleet) 375,000 Annual idle hours per truck 50 Incentives per truck (Oklahoma) $5,250 CNG price $1.19 Gasoline price $3.46 ///////////////////////////////////////////////////////////////////////////////////////////// 8 mo. PER TRUCK PAYBACK IN YEARS $65,160 ANNUAL COST SAVINGS PER 10- TRUCK FLEET IN OKLAHOMA ///////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////// /// 18

THANK YOU Pete Leonard Eastern Region Automotive Sales Manager (214) /// 19