“PZEV” – WHAT DOES IT MEAN, AND HOW DOES IT APPLY TO SUBARU VEHICLES?
In the last issue of Drive, the article Controlling Emissions – Part One stated “... that some Subaru models have available Partial Zero Emission Vehicle (PZEV) engines.” In Part Two, we take a closer look at Subaru PZEV models.
STATE AND FEDERAL EMISSIONS STANDARDS
California vehicle standards have led the way in requiring low emissions by vehicles. Set by the California Air Resources Board (CARB), these stringent standards have been adopted by several other states, including Connecticut, Maine, Massachusetts, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington. Automakers produce vehicles that meet both these requirements and ones set by the U.S. Environmental Protection Agency (EPA).
CARB defined the PZEV classification. A PZEV vehicle meets Super Ultra Low Emission Vehicle (SULEV) exhaust emission standards and zero evaporative emissions standards. Vehicles meeting these standards are considered the cleanest gasoline-powered vehicles. In addition, the PZEV classification includes a 15-year/150,000-mile (whichever comes first) emission performance and defect warranty, including the On-Board Diagnostic (OBD II) vehicle system, depending on the state in which the vehicle is sold.
PZEV Emission Warranty
Although PZEV vehicles are not required by all states, Subaru makes them available throughout the United States. PZEV vehicles are required to be sold in the following states that have adopted the California Air Resources Board (CARB) Low Emission Vehicle (LEV2) standards:
- New Jersey
- New York
- Rhode Island
Only those PZEV vehicles sold and registered in California, Connecticut, Maine, Massachusetts, New Jersey, New York, Rhode Island, and Vermont are eligible for the 15-year/150,000-mile emission warranty.3 (The states of Oregon, Pennsylvania, and Washington elected not to adopt the PZEV emission warranty.)
SUBARU PZEV VEHICLES
At Subaru, protecting the environment is just as important as protecting our passengers. That’s why we build fuel-efficient vehicles in ecologically minded plants. Subaru of America, Inc. offers Legacy, Outback, and Forester 2.5L naturally aspirated (non-turbocharged) vehicles that achieve a PZEV rating by the California Air Resources Board. We plan to enhance this product offering in the future. The EPA endorses all Subaru PZEV vehicles as SmartWay®1 certified and promotes them in their Green Vehicle Guide.2
Vehicles with PZEV emissions ratings have such tight pollution controls, and the burning of fuel is so complete, that in very smoggy urban areas, exhaust out of the tailpipe can actually be cleaner than the air outside.
Today’s SUBARU BOXER engine has evolved to a level that doesn’t require many changes to earn a PZEV label. The differences between non-PZEV and PZEV certified Subaru vehicles can be found in two areas:
- The catalytic converter
- The Engine Control Module (ECM) programming
The catalytic converter for a PZEV engine utilizes a higher volume of precious metals than the standard converter. Although that makes the catalytic converter more efficient, it is also more expensive to produce. The PZEV engine’s ECM program has been enhanced to operate the engine for reduced emissions.
At a relatively low cost, and without any special equipment, Subaru PZEV vehicles help their owners to contribute to the environment by emitting fewer pollutants to the atmosphere. These vehicles have the same fuel and maintenance requirements as non-PZEV naturally aspirated vehicles, so there’s nothing unusual about their care. They do so for a retail price of only $200 more than a non-PZEV Subaru model.
To date, more than 150,000 Subaru owners drive PZEV vehicles.
1 SmartWay is a registered trademark of the U.S. Environmental Protection Agency.
2 For 2009 Forester, Legacy, and Outback 2.5L, non-turbo models certified as Partial Zero Emission Vehicles (PZEV) that are sold, registered, and operated in CA, CT, ME, MA, NJ, NY, OR, PA, RI, VT, and WA. PZEV emissions warranty applies only in certain states. See your dealer for complete information on emissions and new car limited warranties.
3 For all Forester, Legacy, and Outback 2.5L non-turbo models certified as PZEV that are sold, registered, and operated only in California and certain other states.
SUBARU PARTIAL ZERO EMISSION VEHICLES (PZEV) TECHNOLOGY
At Subaru we constantly seek to find an ideal balance. Between innovation and heritage. Safety and exhilaration. Performance and social responsibility.
At Subaru, protecting the environment is just as important as protecting our passengers. That’s why we build fuel-efficient vehicles in ecologically minded plants.
Our certified Partial Zero Emission Vehicles (PZEV) are considered the cleanest gasoline-powered vehicles on the road. They meet California’s most stringent tailpipe emission standard for Super Ultra Low Emission Vehicles or SULEV.
These vehicles with PZEV emissions rating have such tight pollution controls, and the burning of fuel is so complete, that in very smoggy urban areas, exhaust out of the tailpipe can actually be cleaner than the air outside.
The EPA endorses all Subaru PZEV vehicles as SmartWay certified and promotes them in their Green Vehicle Guide.