1. The global leader in natural gas engines.
Powering transportation.
Driving change.
The global leader in natural gas engines.
Westport Summary
Westport Innovations Inc.
John Lapetz Vice President
June 5, 2013
stock symbols market capitalization
TSX NASDAQ CAD USD
WPT WPRT $1.5 billion $1.5 billion

2. Westport at a Glance
2
market focus position strategy
Transformation from
petroleum-fuelled to
alternative-fuelled
engines.
The global leader in
gaseous fuel engineering
and technology.
Leverage IP to penetrate
markets through
relationships with market-
leading OEMs.
2

3. application
engine
displace-
ment kw/cyl
fuel /
year
current
uptake
fuel
choice
current gas
technologies
Future trends in
technology
Large marine
Up to
25,000 L
Up to
1,000
Up to
30,000,000
L
~1000 LNG
dual fuel
Performance
 Minimize HC
 Increase BMEP
SI pre-chamber
direct injection Reduce PM
Off-highway
• locomotive
• mine haul
• medium marine
20 to 150 L 150–275
~1,000,000
L
~10 LNG n/a
Heavy-duty
vehicles
• on-highway
trucks
9 to 16 L ~75 ~100,000 L ~10,000
LNG
or
CNG
direct injection Reduce PM
dual fuel
Performance
 Minimize HC
 Increase BMEP
spark ignited
 Lean-burn
 Stoich / EGR
spark ignited
 Spark plug life
Medium-duty
vehicles
• buses
• refuse haulers
5 to 9 L ~40 ~40,000 L ~100,000
MD spark ignited
 Lean-burn
 Stoichiometric
 Stoichiometric+EGR
DI CNG
• Lean-burn
• stoichiometric
LNG storage
Light-duty
vehicles
• passenger cars
• light-duty trucks
Up to 7 L ~40 ~5000 L
>
10,000,000
CNG
LD spark ignited
 Bifuel
 monofuel
DI CNG
• Lean-burn
• stoichiometric
LNG storage
Transportation Technology Spectrum
Values are coarse estimates and information is based on Westport’s best knowledge 3
propagate
Westport™
HPDI in best
applications
develop
best
premixed
charge
engines
develop
solution
for diesel
engines

4. Why Natural Gas for Transportation
Energy Pricing
 Abundant supply globally
 International Energy
Agency (IEA) and US
Department of Energy
predict rising oil prices and
stable natural gas pricing
through 2050
Emissions and GHG
 Natural Gas has ~25%
less carbon per unit of
energy than diesel fuel
 Bio-methane offers
potential for extremely low
or negative net GHG
Energy Security
 Abundant domestic
reserves of conventional
and tight gas
 Shale gas and coal
methane have expanded
resource base
Normalised GHG Emissions Measured In Engine Test Cell
60%
70%
80%
90%
100%
Diesel FTP Diesel ESC HPDI FTP HPDI ESC
CO2 CH4*21
-29% -25%
SOURCE: “Energy in Australia 2012” Bureau of
Resources and Energy Economics (BREE)
25-60%
less
than oil
SOURCE: “World Energy Outlook 2010”, EIA
SOURCE: Westport HD 15L ADR 80/02 engine
certification test results
4

5. Elements to Advancing the Curve
5
Technology
Favourable
Economics
Infrastructure
Regulations
and Incentives Adoption
2006: Shale
Gas
Revolution
2007: Clean
Energy
builds 1st
LNG station
Shell
announces
developing
LNG
infrastructure