A vehicle standard that is part of the LEV II Program. A vehicle that meets SULEV tailpipe emissions and has zero fuel evaporative emissions.
Partial Zero Emission Vehicle. An administrative category within the U.S. state of California for low emission vehicles. These vehicles are also known as Super Ultra Low Emission Vehicles (SULEVs). To meet PZEV requirements, a vehicle must meet SULEV-2 emissions levels combined with a 15-year/150K mile emissions warranty and a zero-evaporative fuel system.
Partial Zero Emission Vehicle. (A manufacturer must eliminate evaporative emissions and ensure that the vehicle will run cleanly for its entire projected life. Even if the vehicle is just sitting in the driveway, it is still polluting. The source of this pollution is hydrocarbons emitted from the gas tank as gasoline slowly evaporates. To achieve PZEV certification, all evaporative emissions must be eliminated.)
Partial Zero Emission Vehicle PZEVs are the second most stringent set of emission standards under the California Motor Vehicle standards. These cars meet SULEV tailpipe emission standards, have zero evaporative emissions and a 15-year / 150,000-mile warranty. Zero evaporative emissions means no gases may be emitted from the vehicle's fuel tank or other fuel delivery systems (as opposed to the tailpipe). Advanced technology or AT-PZEVs are a sub-category of PZEVs. They meet the PZEV requirements and include vehicles such as dedicated compressed natural gas or hybrid electric vehicles.
Partial Zero Emissions Vehicle - PZEVs meet SULEV tailpipe emission standards, have zero evaporative emissions and a 15 year / 150,000 mile warranty. No evaporative emissions means that they have fewer emissions while being driven than a typical gasoline car has while just sitting.
Partial Zero Emission Vehicle Vehicles meeting SULEV II exhaust and zero evaporative emissions standards
Partial zero-emission vehicle – Meets SULEV tailpipe standards, has zero evaporative emissions and a 15-year or 150,000-mile warranty on the PZEV equipment.
One of the most stringent Californian environmental regulation. Adopted in 2003, it requires vehicles to reduce their fuel emissions by a factor of ten, to under 54 mg of hydrocarbons per vehicle per day.
Partial zero-emission vehicle, an awkward name (part of zero?) that probably should be called "partial-credit" ZEV. This is a vehicle that meets the SULEV tailpipe emission limits, has no evaporative emissions (gasoline escaping after the vehicle is warmed up and parked), and has a 15-year warranty against failure of emissions-related components. Because of automaker lawsuits, lobbying, and foot-dragging, California modified its vehicle emission regulations so that automakers don't actually have to build any substantial number of zero-emission vehicles; rather, they can instead fill their ZEV quota by making PZEVs and a small number of fuel-cell vehicle prototypes. Sometimes confused with plug-in hybrids that can run in zero-emission mode part of the time, but these are not the same thing.
